uncheck checkbox programmatically in reactjs
Using plain javascript you can acheive like below.
function unCheck() {
var x = document.getElementsByClassName("checkbox");
for(i=0; i<=x.length; i++) {
x[i].checked = false;
}
}
Small DEMO
There is property of checkbox checked you can use that to toggle the status of check box.
Possible Ways:
1- You can use ref with check boxes, and onClick of button, by using ref you can unCheck the box.
2- You can use controlled element, means store the status of check box inside a state variable and update that when button clicked.
Check this example by using ref, assign a unique ref to each check box then pass the index of that item inside onClick function, use that index to toggle specific checkBox:
class App extends React.Component{
constructor(){
super();
this.state = {value: ''}
}
unCheck(i){
let ref = 'ref_' + i;
this.refs[ref].checked = !this.refs[ref].checked;
}
render(){
return (
<div>
{[1,2,3,4,5].map((item,i) => {
return (
<div>
<input type="checkbox" checked={true} ref={'ref_' + i}/>
<button onClick={()=>this.unCheck(i)}>Toggle</button>
</div>
)
})}
</div>
)
}
}
ReactDOM.render(<App/>, document.getElementById('app'))<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='app'/>Check this example of controlled element, means storing the state of checkbox inside state variable, and on click of button change the value of that:
class App extends React.Component{
constructor(){
super();
this.state = {value: []}
}
onChange(e, i){
let value = this.state.value.slice();
value[i] = e.target.checked;
this.setState({value})
}
unCheck(i){
let value = this.state.value.slice();
value[i] = !value[i];
this.setState({value})
}
render(){
return (
<div>
{[1,2,3,4,5].map((item,i) => {
return (
<div>
<input checked={this.state.value[i]} type="checkbox" onChange={(e) => this.onChange(e, i)}/>
<button onClick={()=>this.unCheck(i)}>Toggle</button>
</div>
)
})}
</div>
)
}
}
ReactDOM.render(<App/>, document.getElementById('app'))<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='app'/>React
Checked
- Using State
<input type="radio" name="count" value="minus" onChange={this.handleRadioChange} checked={this.state.operation == "minus"} /> Decrement
2.Using Refs
<input type="radio" name="count" ref="minus" /> Decrement
onSubmit(e){ this.refs.minus.checked = false }