Scroll indicator JavaScript

I use the following code for a scroll indicator which I include on multiple pages.

.progress-container {

        width: 100%;

        height: 8px;

        background: #ccc;

        position: fixed;

        top: 0;

        z-index: 1000;

    }

    

    .progress-bar {

        height: 8px;

        background: #4caf50;

        width: 0%;

    }

    <div class="fixedBar">

        <div class="header">

            <div class="progress-container">

                <div class="progress-bar" id="myBar"></div>

            </div>

        </div>

    </div>

    

    

    <script>

        // When the user scrolls the page, execute myFunction

        window.onscroll = function () {

            myFunction()

        };

    

        function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = (winScroll / height) * 100;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

    </script>

But some of the pages are not able to scroll due to lack of content I am trying to get the scroll indicator to also be filled I can't figure out why it's not filling if it cant scroll ( I am not good with JavaScript either :3 )

edited Nov 14 '18 at 8:40

Aravind

3,21811833

asked Nov 14 '18 at 8:32

Chris. P

154

add a comment |

I use the following code for a scroll indicator which I include on multiple pages.

.progress-container {

        width: 100%;

        height: 8px;

        background: #ccc;

        position: fixed;

        top: 0;

        z-index: 1000;

    }

    

    .progress-bar {

        height: 8px;

        background: #4caf50;

        width: 0%;

    }

    <div class="fixedBar">

        <div class="header">

            <div class="progress-container">

                <div class="progress-bar" id="myBar"></div>

            </div>

        </div>

    </div>

    

    

    <script>

        // When the user scrolls the page, execute myFunction

        window.onscroll = function () {

            myFunction()

        };

    

        function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = (winScroll / height) * 100;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

    </script>

edited Nov 14 '18 at 8:40

Aravind

3,21811833

asked Nov 14 '18 at 8:32

Chris. P

154

add a comment |

I use the following code for a scroll indicator which I include on multiple pages.

.progress-container {

        width: 100%;

        height: 8px;

        background: #ccc;

        position: fixed;

        top: 0;

        z-index: 1000;

    }

    

    .progress-bar {

        height: 8px;

        background: #4caf50;

        width: 0%;

    }

    <div class="fixedBar">

        <div class="header">

            <div class="progress-container">

                <div class="progress-bar" id="myBar"></div>

            </div>

        </div>

    </div>

    

    

    <script>

        // When the user scrolls the page, execute myFunction

        window.onscroll = function () {

            myFunction()

        };

    

        function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = (winScroll / height) * 100;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

    </script>

edited Nov 14 '18 at 8:40

Aravind

3,21811833

asked Nov 14 '18 at 8:32

Chris. P

154

I use the following code for a scroll indicator which I include on multiple pages.

.progress-container {

        width: 100%;

        height: 8px;

        background: #ccc;

        position: fixed;

        top: 0;

        z-index: 1000;

    }

    

    .progress-bar {

        height: 8px;

        background: #4caf50;

        width: 0%;

    }

    <div class="fixedBar">

        <div class="header">

            <div class="progress-container">

                <div class="progress-bar" id="myBar"></div>

            </div>

        </div>

    </div>

    

    

    <script>

        // When the user scrolls the page, execute myFunction

        window.onscroll = function () {

            myFunction()

        };

    

        function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = (winScroll / height) * 100;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

    </script>

.progress-container {

        width: 100%;

        height: 8px;

        background: #ccc;

        position: fixed;

        top: 0;

        z-index: 1000;

    }

    

    .progress-bar {

        height: 8px;

        background: #4caf50;

        width: 0%;

    }

    <div class="fixedBar">

        <div class="header">

            <div class="progress-container">

                <div class="progress-bar" id="myBar"></div>

            </div>

        </div>

    </div>

    

    

    <script>

        // When the user scrolls the page, execute myFunction

        window.onscroll = function () {

            myFunction()

        };

    

        function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = (winScroll / height) * 100;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

    </script>

.progress-container {

        width: 100%;

        height: 8px;

        background: #ccc;

        position: fixed;

        top: 0;

        z-index: 1000;

    }

    

    .progress-bar {

        height: 8px;

        background: #4caf50;

        width: 0%;

    }

    <div class="fixedBar">

        <div class="header">

            <div class="progress-container">

                <div class="progress-bar" id="myBar"></div>

            </div>

        </div>

    </div>

    

    

    <script>

        // When the user scrolls the page, execute myFunction

        window.onscroll = function () {

            myFunction()

        };

    

        function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = (winScroll / height) * 100;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

    </script>

javascript html css

edited Nov 14 '18 at 8:40

Aravind

3,21811833

asked Nov 14 '18 at 8:32

Chris. P

154

edited Nov 14 '18 at 8:40

Aravind

3,21811833

asked Nov 14 '18 at 8:32

Chris. P

154

edited Nov 14 '18 at 8:40

Aravind

3,21811833

edited Nov 14 '18 at 8:40

Aravind

3,21811833

edited Nov 14 '18 at 8:40

Aravind

3,21811833

asked Nov 14 '18 at 8:32

Chris. P

154

asked Nov 14 '18 at 8:32

Chris. P

154

asked Nov 14 '18 at 8:32

Chris. P

154

add a comment |

4 Answers
4

active

oldest

votes

Two things:

Execute your function at least once when the page is loaded

Check if document has no scroll and set full width in that case.

Here it is:

// When the user scrolls the page, execute myFunction

window.onscroll = function () {

    myFunction()

};



// Execute myFunction once when the page is loaded

window.onload = function() {

  myFunction();

}



function myFunction() {

    var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

    var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

    var scrolled = 100; // Default value: fill width



    // Only if document is scrollable

    if (height > 0) {

        scrolled = (winScroll / height) * 100;

    }

    document.getElementById("myBar").style.width = scrolled + "%";

}

answered Nov 14 '18 at 8:50

DanieleAlessandra

625511

add a comment |

Try this:

.progress-container {

        width: 100%;

        height: 8px;

        background: #ccc;

        position: fixed;

        top: 0;

        z-index: 1000;

    }

    

    .progress-bar {

        height: 8px;

        background: #4caf50;

        width: 0%;

    }

    <div class="fixedBar">

        <div class="header">

            <div class="progress-container">

                <div class="progress-bar" id="myBar"></div>

            </div>

        </div>

    </div>

    

    

    <script>



         window.onload = function () {

             if (document.documentElement.scrollHeight === document.documentElement.clientHeight){

                 document.getElementById("myBar").style.width = "100%";

             }

         };



        // When the user scrolls the page, execute myFunction

        window.onscroll = function () {

            myFunction()

        };

    

        function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = (winScroll / height) * 100;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

    </script>

answered Nov 14 '18 at 8:48

joshua miller

716516

Thanks for the quick reply it works !!! <3

– Chris. P
Nov 14 '18 at 8:54

add a comment |

You cant't divide by zero
try this

function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = height !== 0 ? (winScroll / height) * 100 : 0;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

edited Nov 14 '18 at 8:51

Brendan Nee

2,51312328

answered Nov 14 '18 at 8:49

Wladimir Diskowski

586

add a comment |

The problem you have is due to the lack of a check of the height of the docuement and the client's window height. Yo can solve it like this:

    let heightClient = window.innerHeight;

    let body = document.body,

        html = document.documentElement;



    let heightDocument = Math.max( body.scrollHeight, body.offsetHeight,

        html.clientHeight, html.scrollHeight, html.offsetHeight );



    if(heightClient < heightDocument){

        window.onscroll = function() {myFunction()};

    }else document.getElementById("myBar").style.width = "100%";



    function myFunction() {

        let winScroll = document.body.scrollTop || document.documentElement.scrollTop;

        let height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

        let scrolled = (winScroll / height) * 100;

        document.getElementById("myBar").style.width = scrolled + "%";

    }

</script>

edited Nov 14 '18 at 9:12

answered Nov 14 '18 at 8:50

marius-serban

add a comment |

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4 Answers
4

active

oldest

votes

4 Answers
4

active

oldest

votes

Two things:

Execute your function at least once when the page is loaded

Check if document has no scroll and set full width in that case.

Here it is:

// When the user scrolls the page, execute myFunction

window.onscroll = function () {

    myFunction()

};



// Execute myFunction once when the page is loaded

window.onload = function() {

  myFunction();

}



function myFunction() {

    var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

    var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

    var scrolled = 100; // Default value: fill width



    // Only if document is scrollable

    if (height > 0) {

        scrolled = (winScroll / height) * 100;

    }

    document.getElementById("myBar").style.width = scrolled + "%";

}

answered Nov 14 '18 at 8:50

DanieleAlessandra

625511

add a comment |

Two things:

Execute your function at least once when the page is loaded

Check if document has no scroll and set full width in that case.

Here it is:

// When the user scrolls the page, execute myFunction

window.onscroll = function () {

    myFunction()

};



// Execute myFunction once when the page is loaded

window.onload = function() {

  myFunction();

}



function myFunction() {

    var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

    var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

    var scrolled = 100; // Default value: fill width



    // Only if document is scrollable

    if (height > 0) {

        scrolled = (winScroll / height) * 100;

    }

    document.getElementById("myBar").style.width = scrolled + "%";

}

answered Nov 14 '18 at 8:50

DanieleAlessandra

625511

add a comment |

Two things:

Execute your function at least once when the page is loaded

Check if document has no scroll and set full width in that case.

Here it is:

// When the user scrolls the page, execute myFunction

window.onscroll = function () {

    myFunction()

};



// Execute myFunction once when the page is loaded

window.onload = function() {

  myFunction();

}



function myFunction() {

    var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

    var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

    var scrolled = 100; // Default value: fill width



    // Only if document is scrollable

    if (height > 0) {

        scrolled = (winScroll / height) * 100;

    }

    document.getElementById("myBar").style.width = scrolled + "%";

}

answered Nov 14 '18 at 8:50

DanieleAlessandra

625511

Two things:

Execute your function at least once when the page is loaded

Check if document has no scroll and set full width in that case.

Here it is:

// When the user scrolls the page, execute myFunction

window.onscroll = function () {

    myFunction()

};



// Execute myFunction once when the page is loaded

window.onload = function() {

  myFunction();

}



function myFunction() {

    var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

    var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

    var scrolled = 100; // Default value: fill width



    // Only if document is scrollable

    if (height > 0) {

        scrolled = (winScroll / height) * 100;

    }

    document.getElementById("myBar").style.width = scrolled + "%";

}

answered Nov 14 '18 at 8:50

DanieleAlessandra

625511

answered Nov 14 '18 at 8:50

DanieleAlessandra

625511

answered Nov 14 '18 at 8:50

DanieleAlessandra

625511

answered Nov 14 '18 at 8:50

DanieleAlessandra

625511

add a comment |

Try this:

.progress-container {

        width: 100%;

        height: 8px;

        background: #ccc;

        position: fixed;

        top: 0;

        z-index: 1000;

    }

    

    .progress-bar {

        height: 8px;

        background: #4caf50;

        width: 0%;

    }

    <div class="fixedBar">

        <div class="header">

            <div class="progress-container">

                <div class="progress-bar" id="myBar"></div>

            </div>

        </div>

    </div>

    

    

    <script>



         window.onload = function () {

             if (document.documentElement.scrollHeight === document.documentElement.clientHeight){

                 document.getElementById("myBar").style.width = "100%";

             }

         };



        // When the user scrolls the page, execute myFunction

        window.onscroll = function () {

            myFunction()

        };

    

        function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = (winScroll / height) * 100;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

    </script>

answered Nov 14 '18 at 8:48

joshua miller

716516

Thanks for the quick reply it works !!! <3

– Chris. P
Nov 14 '18 at 8:54

add a comment |

Try this:

.progress-container {

        width: 100%;

        height: 8px;

        background: #ccc;

        position: fixed;

        top: 0;

        z-index: 1000;

    }

    

    .progress-bar {

        height: 8px;

        background: #4caf50;

        width: 0%;

    }

    <div class="fixedBar">

        <div class="header">

            <div class="progress-container">

                <div class="progress-bar" id="myBar"></div>

            </div>

        </div>

    </div>

    

    

    <script>



         window.onload = function () {

             if (document.documentElement.scrollHeight === document.documentElement.clientHeight){

                 document.getElementById("myBar").style.width = "100%";

             }

         };



        // When the user scrolls the page, execute myFunction

        window.onscroll = function () {

            myFunction()

        };

    

        function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = (winScroll / height) * 100;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

    </script>

answered Nov 14 '18 at 8:48

joshua miller

716516

Thanks for the quick reply it works !!! <3

– Chris. P
Nov 14 '18 at 8:54

add a comment |

Try this:

.progress-container {

        width: 100%;

        height: 8px;

        background: #ccc;

        position: fixed;

        top: 0;

        z-index: 1000;

    }

    

    .progress-bar {

        height: 8px;

        background: #4caf50;

        width: 0%;

    }

    <div class="fixedBar">

        <div class="header">

            <div class="progress-container">

                <div class="progress-bar" id="myBar"></div>

            </div>

        </div>

    </div>

    

    

    <script>



         window.onload = function () {

             if (document.documentElement.scrollHeight === document.documentElement.clientHeight){

                 document.getElementById("myBar").style.width = "100%";

             }

         };



        // When the user scrolls the page, execute myFunction

        window.onscroll = function () {

            myFunction()

        };

    

        function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = (winScroll / height) * 100;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

    </script>

answered Nov 14 '18 at 8:48

joshua miller

716516

Try this:

.progress-container {

        width: 100%;

        height: 8px;

        background: #ccc;

        position: fixed;

        top: 0;

        z-index: 1000;

    }

    

    .progress-bar {

        height: 8px;

        background: #4caf50;

        width: 0%;

    }

    <div class="fixedBar">

        <div class="header">

            <div class="progress-container">

                <div class="progress-bar" id="myBar"></div>

            </div>

        </div>

    </div>

    

    

    <script>



         window.onload = function () {

             if (document.documentElement.scrollHeight === document.documentElement.clientHeight){

                 document.getElementById("myBar").style.width = "100%";

             }

         };



        // When the user scrolls the page, execute myFunction

        window.onscroll = function () {

            myFunction()

        };

    

        function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = (winScroll / height) * 100;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

    </script>

.progress-container {

        width: 100%;

        height: 8px;

        background: #ccc;

        position: fixed;

        top: 0;

        z-index: 1000;

    }

    

    .progress-bar {

        height: 8px;

        background: #4caf50;

        width: 0%;

    }

    <div class="fixedBar">

        <div class="header">

            <div class="progress-container">

                <div class="progress-bar" id="myBar"></div>

            </div>

        </div>

    </div>

    

    

    <script>



         window.onload = function () {

             if (document.documentElement.scrollHeight === document.documentElement.clientHeight){

                 document.getElementById("myBar").style.width = "100%";

             }

         };



        // When the user scrolls the page, execute myFunction

        window.onscroll = function () {

            myFunction()

        };

    

        function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = (winScroll / height) * 100;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

    </script>

.progress-container {

        width: 100%;

        height: 8px;

        background: #ccc;

        position: fixed;

        top: 0;

        z-index: 1000;

    }

    

    .progress-bar {

        height: 8px;

        background: #4caf50;

        width: 0%;

    }

    <div class="fixedBar">

        <div class="header">

            <div class="progress-container">

                <div class="progress-bar" id="myBar"></div>

            </div>

        </div>

    </div>

    

    

    <script>



         window.onload = function () {

             if (document.documentElement.scrollHeight === document.documentElement.clientHeight){

                 document.getElementById("myBar").style.width = "100%";

             }

         };



        // When the user scrolls the page, execute myFunction

        window.onscroll = function () {

            myFunction()

        };

    

        function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = (winScroll / height) * 100;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

    </script>

answered Nov 14 '18 at 8:48

joshua miller

716516

answered Nov 14 '18 at 8:48

joshua miller

716516

answered Nov 14 '18 at 8:48

joshua miller

716516

answered Nov 14 '18 at 8:48

joshua miller

716516

Thanks for the quick reply it works !!! <3

– Chris. P
Nov 14 '18 at 8:54

add a comment |

Thanks for the quick reply it works !!! <3

– Chris. P
Nov 14 '18 at 8:54

Thanks for the quick reply it works !!! <3

– Chris. P
Nov 14 '18 at 8:54

add a comment |

You cant't divide by zero
try this

function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = height !== 0 ? (winScroll / height) * 100 : 0;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

edited Nov 14 '18 at 8:51

Brendan Nee

2,51312328

answered Nov 14 '18 at 8:49

Wladimir Diskowski

586

add a comment |

You cant't divide by zero
try this

function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = height !== 0 ? (winScroll / height) * 100 : 0;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

edited Nov 14 '18 at 8:51

Brendan Nee

2,51312328

answered Nov 14 '18 at 8:49

Wladimir Diskowski

586

add a comment |

You cant't divide by zero
try this

function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = height !== 0 ? (winScroll / height) * 100 : 0;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

edited Nov 14 '18 at 8:51

Brendan Nee

2,51312328

answered Nov 14 '18 at 8:49

Wladimir Diskowski

586

You cant't divide by zero
try this

function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = height !== 0 ? (winScroll / height) * 100 : 0;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = height !== 0 ? (winScroll / height) * 100 : 0;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

function myFunction() {

            var winScroll = document.body.scrollTop || document.documentElement.scrollTop;

            var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

            var scrolled = height !== 0 ? (winScroll / height) * 100 : 0;

            document.getElementById("myBar").style.width = scrolled + "%";

        }

edited Nov 14 '18 at 8:51

Brendan Nee

2,51312328

answered Nov 14 '18 at 8:49

Wladimir Diskowski

586

edited Nov 14 '18 at 8:51

Brendan Nee

2,51312328

edited Nov 14 '18 at 8:51

Brendan Nee

2,51312328

edited Nov 14 '18 at 8:51

Brendan Nee

2,51312328

answered Nov 14 '18 at 8:49

Wladimir Diskowski

586

answered Nov 14 '18 at 8:49

Wladimir Diskowski

586

answered Nov 14 '18 at 8:49

Wladimir Diskowski

586

add a comment |

The problem you have is due to the lack of a check of the height of the docuement and the client's window height. Yo can solve it like this:

    let heightClient = window.innerHeight;

    let body = document.body,

        html = document.documentElement;



    let heightDocument = Math.max( body.scrollHeight, body.offsetHeight,

        html.clientHeight, html.scrollHeight, html.offsetHeight );



    if(heightClient < heightDocument){

        window.onscroll = function() {myFunction()};

    }else document.getElementById("myBar").style.width = "100%";



    function myFunction() {

        let winScroll = document.body.scrollTop || document.documentElement.scrollTop;

        let height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

        let scrolled = (winScroll / height) * 100;

        document.getElementById("myBar").style.width = scrolled + "%";

    }

</script>

edited Nov 14 '18 at 9:12

answered Nov 14 '18 at 8:50

marius-serban

add a comment |

The problem you have is due to the lack of a check of the height of the docuement and the client's window height. Yo can solve it like this:

    let heightClient = window.innerHeight;

    let body = document.body,

        html = document.documentElement;



    let heightDocument = Math.max( body.scrollHeight, body.offsetHeight,

        html.clientHeight, html.scrollHeight, html.offsetHeight );



    if(heightClient < heightDocument){

        window.onscroll = function() {myFunction()};

    }else document.getElementById("myBar").style.width = "100%";



    function myFunction() {

        let winScroll = document.body.scrollTop || document.documentElement.scrollTop;

        let height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

        let scrolled = (winScroll / height) * 100;

        document.getElementById("myBar").style.width = scrolled + "%";

    }

</script>

edited Nov 14 '18 at 9:12

answered Nov 14 '18 at 8:50

marius-serban

add a comment |

The problem you have is due to the lack of a check of the height of the docuement and the client's window height. Yo can solve it like this:

    let heightClient = window.innerHeight;

    let body = document.body,

        html = document.documentElement;



    let heightDocument = Math.max( body.scrollHeight, body.offsetHeight,

        html.clientHeight, html.scrollHeight, html.offsetHeight );



    if(heightClient < heightDocument){

        window.onscroll = function() {myFunction()};

    }else document.getElementById("myBar").style.width = "100%";



    function myFunction() {

        let winScroll = document.body.scrollTop || document.documentElement.scrollTop;

        let height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

        let scrolled = (winScroll / height) * 100;

        document.getElementById("myBar").style.width = scrolled + "%";

    }

</script>

edited Nov 14 '18 at 9:12

answered Nov 14 '18 at 8:50

marius-serban

The problem you have is due to the lack of a check of the height of the docuement and the client's window height. Yo can solve it like this:

    let heightClient = window.innerHeight;

    let body = document.body,

        html = document.documentElement;



    let heightDocument = Math.max( body.scrollHeight, body.offsetHeight,

        html.clientHeight, html.scrollHeight, html.offsetHeight );



    if(heightClient < heightDocument){

        window.onscroll = function() {myFunction()};

    }else document.getElementById("myBar").style.width = "100%";



    function myFunction() {

        let winScroll = document.body.scrollTop || document.documentElement.scrollTop;

        let height = document.documentElement.scrollHeight - document.documentElement.clientHeight;

        let scrolled = (winScroll / height) * 100;

        document.getElementById("myBar").style.width = scrolled + "%";

    }

</script>

edited Nov 14 '18 at 9:12

answered Nov 14 '18 at 8:50

marius-serban

edited Nov 14 '18 at 9:12

answered Nov 14 '18 at 8:50

marius-serban

answered Nov 14 '18 at 8:50

marius-serban

answered Nov 14 '18 at 8:50

marius-serban

add a comment |

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