Successful callback of $http is executing twice instead of once - Java script












0















I need to generate and print checkboxes based on JSON feed for books object. So far I tried the following. There are four objects in the datalist array. In HTML, four check boxes should be created for books. But instead eight checkboxes are getting created. Any help would be much appreciated.



JSON



[{      
"books" : {
"contents" : [
{
"title" : "Book1",
"type" : "CHECKBOX"
},
{
"title" : "Book2",
"type" : "CHECKBOX"
},
{
"title" : "Book3",
"type" : "CHECKBOX",
},
{
"title" : "Book4",
"type" : "CHECKBOX",
}
]
}
"storybooks" : {
"contents" : [
{
"title" : "Book1",
"type" : "CHECKBOX"
},
{
"title" : "Book2",
"type" : "CHECKBOX"
},
{
"title" : "Book3",
"type" : "CHECKBOX",
},
{
"title" : "Book4",
"type" : "CHECKBOX",
}
]
}
}]


app.js



var datalist = ;
$http({
method: 'GET',
url: 'json.json'
})
.then(function successCallback(data) {
$scope.data = data.data;
datalist = $scope.data;
for (var i = 0; i < datalist.length; i ++) {
console.log(datalist[i]);
}

$scope.data.map(function (item) {
item.content = item.book.contents;
datalist = item.content;
datalist.forEach((c, index) => {
var btn = document.createElement('input');
btn.type = 'checkbox';

document.getElementById('mydiv').appendChild(btn);

});
});
}, function errorCallback(response) {
console.log(response);
console.log('error');
});


HTML



<div id="mydiv">
</div>









share|improve this question

























  • can you make a code snippet?

    – Santosh
    Nov 16 '18 at 11:02
















0















I need to generate and print checkboxes based on JSON feed for books object. So far I tried the following. There are four objects in the datalist array. In HTML, four check boxes should be created for books. But instead eight checkboxes are getting created. Any help would be much appreciated.



JSON



[{      
"books" : {
"contents" : [
{
"title" : "Book1",
"type" : "CHECKBOX"
},
{
"title" : "Book2",
"type" : "CHECKBOX"
},
{
"title" : "Book3",
"type" : "CHECKBOX",
},
{
"title" : "Book4",
"type" : "CHECKBOX",
}
]
}
"storybooks" : {
"contents" : [
{
"title" : "Book1",
"type" : "CHECKBOX"
},
{
"title" : "Book2",
"type" : "CHECKBOX"
},
{
"title" : "Book3",
"type" : "CHECKBOX",
},
{
"title" : "Book4",
"type" : "CHECKBOX",
}
]
}
}]


app.js



var datalist = ;
$http({
method: 'GET',
url: 'json.json'
})
.then(function successCallback(data) {
$scope.data = data.data;
datalist = $scope.data;
for (var i = 0; i < datalist.length; i ++) {
console.log(datalist[i]);
}

$scope.data.map(function (item) {
item.content = item.book.contents;
datalist = item.content;
datalist.forEach((c, index) => {
var btn = document.createElement('input');
btn.type = 'checkbox';

document.getElementById('mydiv').appendChild(btn);

});
});
}, function errorCallback(response) {
console.log(response);
console.log('error');
});


HTML



<div id="mydiv">
</div>









share|improve this question

























  • can you make a code snippet?

    – Santosh
    Nov 16 '18 at 11:02














0












0








0


0






I need to generate and print checkboxes based on JSON feed for books object. So far I tried the following. There are four objects in the datalist array. In HTML, four check boxes should be created for books. But instead eight checkboxes are getting created. Any help would be much appreciated.



JSON



[{      
"books" : {
"contents" : [
{
"title" : "Book1",
"type" : "CHECKBOX"
},
{
"title" : "Book2",
"type" : "CHECKBOX"
},
{
"title" : "Book3",
"type" : "CHECKBOX",
},
{
"title" : "Book4",
"type" : "CHECKBOX",
}
]
}
"storybooks" : {
"contents" : [
{
"title" : "Book1",
"type" : "CHECKBOX"
},
{
"title" : "Book2",
"type" : "CHECKBOX"
},
{
"title" : "Book3",
"type" : "CHECKBOX",
},
{
"title" : "Book4",
"type" : "CHECKBOX",
}
]
}
}]


app.js



var datalist = ;
$http({
method: 'GET',
url: 'json.json'
})
.then(function successCallback(data) {
$scope.data = data.data;
datalist = $scope.data;
for (var i = 0; i < datalist.length; i ++) {
console.log(datalist[i]);
}

$scope.data.map(function (item) {
item.content = item.book.contents;
datalist = item.content;
datalist.forEach((c, index) => {
var btn = document.createElement('input');
btn.type = 'checkbox';

document.getElementById('mydiv').appendChild(btn);

});
});
}, function errorCallback(response) {
console.log(response);
console.log('error');
});


HTML



<div id="mydiv">
</div>









share|improve this question
















I need to generate and print checkboxes based on JSON feed for books object. So far I tried the following. There are four objects in the datalist array. In HTML, four check boxes should be created for books. But instead eight checkboxes are getting created. Any help would be much appreciated.



JSON



[{      
"books" : {
"contents" : [
{
"title" : "Book1",
"type" : "CHECKBOX"
},
{
"title" : "Book2",
"type" : "CHECKBOX"
},
{
"title" : "Book3",
"type" : "CHECKBOX",
},
{
"title" : "Book4",
"type" : "CHECKBOX",
}
]
}
"storybooks" : {
"contents" : [
{
"title" : "Book1",
"type" : "CHECKBOX"
},
{
"title" : "Book2",
"type" : "CHECKBOX"
},
{
"title" : "Book3",
"type" : "CHECKBOX",
},
{
"title" : "Book4",
"type" : "CHECKBOX",
}
]
}
}]


app.js



var datalist = ;
$http({
method: 'GET',
url: 'json.json'
})
.then(function successCallback(data) {
$scope.data = data.data;
datalist = $scope.data;
for (var i = 0; i < datalist.length; i ++) {
console.log(datalist[i]);
}

$scope.data.map(function (item) {
item.content = item.book.contents;
datalist = item.content;
datalist.forEach((c, index) => {
var btn = document.createElement('input');
btn.type = 'checkbox';

document.getElementById('mydiv').appendChild(btn);

});
});
}, function errorCallback(response) {
console.log(response);
console.log('error');
});


HTML



<div id="mydiv">
</div>






javascript arrays json http callback






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share|improve this question













share|improve this question




share|improve this question








edited Nov 16 '18 at 9:32







Mishty

















asked Nov 16 '18 at 7:09









MishtyMishty

417




417













  • can you make a code snippet?

    – Santosh
    Nov 16 '18 at 11:02



















  • can you make a code snippet?

    – Santosh
    Nov 16 '18 at 11:02

















can you make a code snippet?

– Santosh
Nov 16 '18 at 11:02





can you make a code snippet?

– Santosh
Nov 16 '18 at 11:02












2 Answers
2






active

oldest

votes


















0














I think you were accessing the data incorrectly.



Here is a simplified version:



      $http({
method: 'GET',
url: 'json.json'
})
.then(data => {
const myDiv = document.getElementById('mydiv')
data.books.contents.forEach(b => {
const btn = document.createElement('input')
btn.type = 'checkbox'
myDiv.appendChild(btn)
})
})
.catch(err => {
console.log('error', err)
})





share|improve this answer


























  • Actually JSON has two objects namely books and storybooks. Edited the question with storybooks

    – Mishty
    Nov 16 '18 at 12:10











  • Should be fine if you only use books. Edited a bit

    – Ty Kroll
    Nov 17 '18 at 1:50



















0














Improvised @Try Kroll's suggestion



var count = 0;
http({
method: 'GET',
url: 'json.json'
})
.then(data => {
if(count==0){
const myDiv = document.getElementById('myDiv')
data.data.books.contents.forEach(b => {
const btn = document.createElement('input')
btn.type = 'checkbox'
perhiscontainer.appendChild(btn)
})
count = count+1;
}
})
.catch(err => {
console.log('error', err)
})





share|improve this answer























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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    0














    I think you were accessing the data incorrectly.



    Here is a simplified version:



          $http({
    method: 'GET',
    url: 'json.json'
    })
    .then(data => {
    const myDiv = document.getElementById('mydiv')
    data.books.contents.forEach(b => {
    const btn = document.createElement('input')
    btn.type = 'checkbox'
    myDiv.appendChild(btn)
    })
    })
    .catch(err => {
    console.log('error', err)
    })





    share|improve this answer


























    • Actually JSON has two objects namely books and storybooks. Edited the question with storybooks

      – Mishty
      Nov 16 '18 at 12:10











    • Should be fine if you only use books. Edited a bit

      – Ty Kroll
      Nov 17 '18 at 1:50
















    0














    I think you were accessing the data incorrectly.



    Here is a simplified version:



          $http({
    method: 'GET',
    url: 'json.json'
    })
    .then(data => {
    const myDiv = document.getElementById('mydiv')
    data.books.contents.forEach(b => {
    const btn = document.createElement('input')
    btn.type = 'checkbox'
    myDiv.appendChild(btn)
    })
    })
    .catch(err => {
    console.log('error', err)
    })





    share|improve this answer


























    • Actually JSON has two objects namely books and storybooks. Edited the question with storybooks

      – Mishty
      Nov 16 '18 at 12:10











    • Should be fine if you only use books. Edited a bit

      – Ty Kroll
      Nov 17 '18 at 1:50














    0












    0








    0







    I think you were accessing the data incorrectly.



    Here is a simplified version:



          $http({
    method: 'GET',
    url: 'json.json'
    })
    .then(data => {
    const myDiv = document.getElementById('mydiv')
    data.books.contents.forEach(b => {
    const btn = document.createElement('input')
    btn.type = 'checkbox'
    myDiv.appendChild(btn)
    })
    })
    .catch(err => {
    console.log('error', err)
    })





    share|improve this answer















    I think you were accessing the data incorrectly.



    Here is a simplified version:



          $http({
    method: 'GET',
    url: 'json.json'
    })
    .then(data => {
    const myDiv = document.getElementById('mydiv')
    data.books.contents.forEach(b => {
    const btn = document.createElement('input')
    btn.type = 'checkbox'
    myDiv.appendChild(btn)
    })
    })
    .catch(err => {
    console.log('error', err)
    })






    share|improve this answer














    share|improve this answer



    share|improve this answer








    edited Nov 17 '18 at 1:52

























    answered Nov 16 '18 at 7:59









    Ty KrollTy Kroll

    1,039822




    1,039822













    • Actually JSON has two objects namely books and storybooks. Edited the question with storybooks

      – Mishty
      Nov 16 '18 at 12:10











    • Should be fine if you only use books. Edited a bit

      – Ty Kroll
      Nov 17 '18 at 1:50



















    • Actually JSON has two objects namely books and storybooks. Edited the question with storybooks

      – Mishty
      Nov 16 '18 at 12:10











    • Should be fine if you only use books. Edited a bit

      – Ty Kroll
      Nov 17 '18 at 1:50

















    Actually JSON has two objects namely books and storybooks. Edited the question with storybooks

    – Mishty
    Nov 16 '18 at 12:10





    Actually JSON has two objects namely books and storybooks. Edited the question with storybooks

    – Mishty
    Nov 16 '18 at 12:10













    Should be fine if you only use books. Edited a bit

    – Ty Kroll
    Nov 17 '18 at 1:50





    Should be fine if you only use books. Edited a bit

    – Ty Kroll
    Nov 17 '18 at 1:50













    0














    Improvised @Try Kroll's suggestion



    var count = 0;
    http({
    method: 'GET',
    url: 'json.json'
    })
    .then(data => {
    if(count==0){
    const myDiv = document.getElementById('myDiv')
    data.data.books.contents.forEach(b => {
    const btn = document.createElement('input')
    btn.type = 'checkbox'
    perhiscontainer.appendChild(btn)
    })
    count = count+1;
    }
    })
    .catch(err => {
    console.log('error', err)
    })





    share|improve this answer




























      0














      Improvised @Try Kroll's suggestion



      var count = 0;
      http({
      method: 'GET',
      url: 'json.json'
      })
      .then(data => {
      if(count==0){
      const myDiv = document.getElementById('myDiv')
      data.data.books.contents.forEach(b => {
      const btn = document.createElement('input')
      btn.type = 'checkbox'
      perhiscontainer.appendChild(btn)
      })
      count = count+1;
      }
      })
      .catch(err => {
      console.log('error', err)
      })





      share|improve this answer


























        0












        0








        0







        Improvised @Try Kroll's suggestion



        var count = 0;
        http({
        method: 'GET',
        url: 'json.json'
        })
        .then(data => {
        if(count==0){
        const myDiv = document.getElementById('myDiv')
        data.data.books.contents.forEach(b => {
        const btn = document.createElement('input')
        btn.type = 'checkbox'
        perhiscontainer.appendChild(btn)
        })
        count = count+1;
        }
        })
        .catch(err => {
        console.log('error', err)
        })





        share|improve this answer













        Improvised @Try Kroll's suggestion



        var count = 0;
        http({
        method: 'GET',
        url: 'json.json'
        })
        .then(data => {
        if(count==0){
        const myDiv = document.getElementById('myDiv')
        data.data.books.contents.forEach(b => {
        const btn = document.createElement('input')
        btn.type = 'checkbox'
        perhiscontainer.appendChild(btn)
        })
        count = count+1;
        }
        })
        .catch(err => {
        console.log('error', err)
        })






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 17 '18 at 6:32









        MishtyMishty

        417




        417






























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