Geting key value of the dropdown list in reactjs
1
I'm trying to get the 'key' value of my dynamic dropdown list as follows:
searchSubmit(e){
const s = e.target.value;
alert(s);
}
my dropdown list is as follows:
<select
className="textboxstyle"
onChange={this.searchSubmit}
>
<option key='-1'>Select Brand</option>
<option key='0'>ALL</option>
{optionItems}
</select>
And my dynamic drop-down is populated as follows,
let brands = this.state.brands;
let optionItems = brands.map((brand) =>
<option key={brand.id}>{brand.name}</option>
);
But when I select option, alert display the name of the selected value, not the key. How to get the 'key' value?
Thanks
javascript reactjs
edited Nov 15 '18 at 17:10
Tholle
39.8k54366
asked Nov 15 '18 at 16:58
chk.buddichk.buddi
10912
add a comment |
1
I'm trying to get the 'key' value of my dynamic dropdown list as follows:
searchSubmit(e){
const s = e.target.value;
alert(s);
}
my dropdown list is as follows:
<select
className="textboxstyle"
onChange={this.searchSubmit}
>
<option key='-1'>Select Brand</option>
<option key='0'>ALL</option>
{optionItems}
</select>
And my dynamic drop-down is populated as follows,
let brands = this.state.brands;
let optionItems = brands.map((brand) =>
<option key={brand.id}>{brand.name}</option>
);
But when I select option, alert display the name of the selected value, not the key. How to get the 'key' value?
Thanks
javascript reactjs
edited Nov 15 '18 at 17:10
Tholle
39.8k54366
asked Nov 15 '18 at 16:58
chk.buddichk.buddi
10912
add a comment |
1
1
1
I'm trying to get the 'key' value of my dynamic dropdown list as follows:
searchSubmit(e){
const s = e.target.value;
alert(s);
}
my dropdown list is as follows:
<select
className="textboxstyle"
onChange={this.searchSubmit}
>
<option key='-1'>Select Brand</option>
<option key='0'>ALL</option>
{optionItems}
</select>
And my dynamic drop-down is populated as follows,
let brands = this.state.brands;
let optionItems = brands.map((brand) =>
<option key={brand.id}>{brand.name}</option>
);
But when I select option, alert display the name of the selected value, not the key. How to get the 'key' value?
Thanks
javascript reactjs
edited Nov 15 '18 at 17:10
Tholle
39.8k54366
asked Nov 15 '18 at 16:58
chk.buddichk.buddi
10912
I'm trying to get the 'key' value of my dynamic dropdown list as follows:
searchSubmit(e){
const s = e.target.value;
alert(s);
}
my dropdown list is as follows:
<select
className="textboxstyle"
onChange={this.searchSubmit}
>
<option key='-1'>Select Brand</option>
<option key='0'>ALL</option>
{optionItems}
</select>
And my dynamic drop-down is populated as follows,
let brands = this.state.brands;
let optionItems = brands.map((brand) =>
<option key={brand.id}>{brand.name}</option>
);
But when I select option, alert display the name of the selected value, not the key. How to get the 'key' value?
Thanks
javascript reactjs
javascript reactjs
edited Nov 15 '18 at 17:10
Tholle
39.8k54366
asked Nov 15 '18 at 16:58
chk.buddichk.buddi
10912
edited Nov 15 '18 at 17:10
Tholle
39.8k54366
asked Nov 15 '18 at 16:58
chk.buddichk.buddi
10912
edited Nov 15 '18 at 17:10
Tholle
39.8k54366
edited Nov 15 '18 at 17:10
Tholle
39.8k54366
edited Nov 15 '18 at 17:10
Tholle
39.8k54366
39.8k54366
asked Nov 15 '18 at 16:58
chk.buddichk.buddi
10912
asked Nov 15 '18 at 16:58
chk.buddichk.buddi
10912
asked Nov 15 '18 at 16:58
chk.buddichk.buddi
10912
10912
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
1
The key prop is used by React to differentiate between all the elements in an array. If you want value to be the id of the brand, you can use it as value as well as key.
Example
class App extends React.Component {
state = {
brands: [{ id: 1, name: "Foo" }, { id: 2, name: "Bar" }]
};
searchSubmit = e => {
const { value } = e.target;
alert(value);
};
render() {
const { brands } = this.state;
return (
<select onChange={this.searchSubmit}>
<option value="-1">Select Brand</option>
<option value="0">ALL</option>
{brands.map(brand => (
<option value={brand.id} key={brand.id}>
{brand.name}
</option>
))}
</select>
);
}
}
ReactDOM.render(<App />, document.getElementById("root"));<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<div id="root"></div>answered Nov 15 '18 at 17:04
TholleTholle
39.8k54366
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
The key prop is used by React to differentiate between all the elements in an array. If you want value to be the id of the brand, you can use it as value as well as key.
Example
class App extends React.Component {
state = {
brands: [{ id: 1, name: "Foo" }, { id: 2, name: "Bar" }]
};
searchSubmit = e => {
const { value } = e.target;
alert(value);
};
render() {
const { brands } = this.state;
return (
<select onChange={this.searchSubmit}>
<option value="-1">Select Brand</option>
<option value="0">ALL</option>
{brands.map(brand => (
<option value={brand.id} key={brand.id}>
{brand.name}
</option>
))}
</select>
);
}
}
ReactDOM.render(<App />, document.getElementById("root"));<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<div id="root"></div>answered Nov 15 '18 at 17:04
TholleTholle
39.8k54366
add a comment |
1
The key prop is used by React to differentiate between all the elements in an array. If you want value to be the id of the brand, you can use it as value as well as key.
Example
class App extends React.Component {
state = {
brands: [{ id: 1, name: "Foo" }, { id: 2, name: "Bar" }]
};
searchSubmit = e => {
const { value } = e.target;
alert(value);
};
render() {
const { brands } = this.state;
return (
<select onChange={this.searchSubmit}>
<option value="-1">Select Brand</option>
<option value="0">ALL</option>
{brands.map(brand => (
<option value={brand.id} key={brand.id}>
{brand.name}
</option>
))}
</select>
);
}
}
ReactDOM.render(<App />, document.getElementById("root"));<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<div id="root"></div>answered Nov 15 '18 at 17:04
TholleTholle
39.8k54366
add a comment |
1
1
1
The key prop is used by React to differentiate between all the elements in an array. If you want value to be the id of the brand, you can use it as value as well as key.
Example
class App extends React.Component {
state = {
brands: [{ id: 1, name: "Foo" }, { id: 2, name: "Bar" }]
};
searchSubmit = e => {
const { value } = e.target;
alert(value);
};
render() {
const { brands } = this.state;
return (
<select onChange={this.searchSubmit}>
<option value="-1">Select Brand</option>
<option value="0">ALL</option>
{brands.map(brand => (
<option value={brand.id} key={brand.id}>
{brand.name}
</option>
))}
</select>
);
}
}
ReactDOM.render(<App />, document.getElementById("root"));<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<div id="root"></div>answered Nov 15 '18 at 17:04
TholleTholle
39.8k54366
The key prop is used by React to differentiate between all the elements in an array. If you want value to be the id of the brand, you can use it as value as well as key.
Example
class App extends React.Component {
state = {
brands: [{ id: 1, name: "Foo" }, { id: 2, name: "Bar" }]
};
searchSubmit = e => {
const { value } = e.target;
alert(value);
};
render() {
const { brands } = this.state;
return (
<select onChange={this.searchSubmit}>
<option value="-1">Select Brand</option>
<option value="0">ALL</option>
{brands.map(brand => (
<option value={brand.id} key={brand.id}>
{brand.name}
</option>
))}
</select>
);
}
}
ReactDOM.render(<App />, document.getElementById("root"));<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<div id="root"></div>class App extends React.Component {
state = {
brands: [{ id: 1, name: "Foo" }, { id: 2, name: "Bar" }]
};
searchSubmit = e => {
const { value } = e.target;
alert(value);
};
render() {
const { brands } = this.state;
return (
<select onChange={this.searchSubmit}>
<option value="-1">Select Brand</option>
<option value="0">ALL</option>
{brands.map(brand => (
<option value={brand.id} key={brand.id}>
{brand.name}
</option>
))}
</select>
);
}
}
ReactDOM.render(<App />, document.getElementById("root"));<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<div id="root"></div>class App extends React.Component {
state = {
brands: [{ id: 1, name: "Foo" }, { id: 2, name: "Bar" }]
};
searchSubmit = e => {
const { value } = e.target;
alert(value);
};
render() {
const { brands } = this.state;
return (
<select onChange={this.searchSubmit}>
<option value="-1">Select Brand</option>
<option value="0">ALL</option>
{brands.map(brand => (
<option value={brand.id} key={brand.id}>
{brand.name}
</option>
))}
</select>
);
}
}
ReactDOM.render(<App />, document.getElementById("root"));<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<div id="root"></div>answered Nov 15 '18 at 17:04
TholleTholle
39.8k54366
answered Nov 15 '18 at 17:04
TholleTholle
39.8k54366
answered Nov 15 '18 at 17:04
TholleTholle
39.8k54366
answered Nov 15 '18 at 17:04
TholleTholle
39.8k54366
39.8k54366
add a comment |
add a comment |
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