Changes on checkbox state not recognize ReactJS
I tried to do a checkbox that changes the text when checkbox is checked or unchecked however it seems that the state was not changed even after the checkbox is triggered. I am trying to follow a tutorial and encounter this error which for some reason can't find what is the problem. Below is my current code.
var UseOfState = class extends React.Component {
constructor(props) {
super(props);
this.state = {isCheck: true};
this.toggleCheckbox = this.toggleCheckbox.bind(this);
}
toggleCheckbox () {
console.log('checkbox triggered');
this.setState = ({isCheck: !this.state.isCheck});
}
render () {
console.log('render');
var msg;
if(this.state.isCheck) {
msg = 'checked';
console.log(this.state.isCheck);
} else {
msg = 'unchecked';
console.log(this.state.isCheck);
}
return (
<div>
<input type="checkbox" onChange={this.toggleCheckbox} defaultChecked={this.state.isCheck}/>
<h3>Check box is {msg}</h3>
</div>
);
}
}
ReactDOM.render(<UseOfState/>,document.getElementById('root'));
Here is my codepen: https://codepen.io/anon/pen/OazZpa
I want to know where is my error from there :)
javascript reactjs react-native
asked Nov 21 at 2:58
shifu
234218
add a comment |
I tried to do a checkbox that changes the text when checkbox is checked or unchecked however it seems that the state was not changed even after the checkbox is triggered. I am trying to follow a tutorial and encounter this error which for some reason can't find what is the problem. Below is my current code.
var UseOfState = class extends React.Component {
constructor(props) {
super(props);
this.state = {isCheck: true};
this.toggleCheckbox = this.toggleCheckbox.bind(this);
}
toggleCheckbox () {
console.log('checkbox triggered');
this.setState = ({isCheck: !this.state.isCheck});
}
render () {
console.log('render');
var msg;
if(this.state.isCheck) {
msg = 'checked';
console.log(this.state.isCheck);
} else {
msg = 'unchecked';
console.log(this.state.isCheck);
}
return (
<div>
<input type="checkbox" onChange={this.toggleCheckbox} defaultChecked={this.state.isCheck}/>
<h3>Check box is {msg}</h3>
</div>
);
}
}
ReactDOM.render(<UseOfState/>,document.getElementById('root'));
Here is my codepen: https://codepen.io/anon/pen/OazZpa
I want to know where is my error from there :)
javascript reactjs react-native
asked Nov 21 at 2:58
shifu
234218
add a comment |
I tried to do a checkbox that changes the text when checkbox is checked or unchecked however it seems that the state was not changed even after the checkbox is triggered. I am trying to follow a tutorial and encounter this error which for some reason can't find what is the problem. Below is my current code.
var UseOfState = class extends React.Component {
constructor(props) {
super(props);
this.state = {isCheck: true};
this.toggleCheckbox = this.toggleCheckbox.bind(this);
}
toggleCheckbox () {
console.log('checkbox triggered');
this.setState = ({isCheck: !this.state.isCheck});
}
render () {
console.log('render');
var msg;
if(this.state.isCheck) {
msg = 'checked';
console.log(this.state.isCheck);
} else {
msg = 'unchecked';
console.log(this.state.isCheck);
}
return (
<div>
<input type="checkbox" onChange={this.toggleCheckbox} defaultChecked={this.state.isCheck}/>
<h3>Check box is {msg}</h3>
</div>
);
}
}
ReactDOM.render(<UseOfState/>,document.getElementById('root'));
Here is my codepen: https://codepen.io/anon/pen/OazZpa
I want to know where is my error from there :)
javascript reactjs react-native
asked Nov 21 at 2:58
shifu
234218
I tried to do a checkbox that changes the text when checkbox is checked or unchecked however it seems that the state was not changed even after the checkbox is triggered. I am trying to follow a tutorial and encounter this error which for some reason can't find what is the problem. Below is my current code.
var UseOfState = class extends React.Component {
constructor(props) {
super(props);
this.state = {isCheck: true};
this.toggleCheckbox = this.toggleCheckbox.bind(this);
}
toggleCheckbox () {
console.log('checkbox triggered');
this.setState = ({isCheck: !this.state.isCheck});
}
render () {
console.log('render');
var msg;
if(this.state.isCheck) {
msg = 'checked';
console.log(this.state.isCheck);
} else {
msg = 'unchecked';
console.log(this.state.isCheck);
}
return (
<div>
<input type="checkbox" onChange={this.toggleCheckbox} defaultChecked={this.state.isCheck}/>
<h3>Check box is {msg}</h3>
</div>
);
}
}
ReactDOM.render(<UseOfState/>,document.getElementById('root'));
Here is my codepen: https://codepen.io/anon/pen/OazZpa
I want to know where is my error from there :)
javascript reactjs react-native
javascript reactjs react-native
asked Nov 21 at 2:58
shifu
234218
asked Nov 21 at 2:58
shifu
234218
asked Nov 21 at 2:58
shifu
234218
asked Nov 21 at 2:58
shifu
234218
asked Nov 21 at 2:58
shifu
234218
234218
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
There is typo on below line
this.setState = ({isCheck: !this.state.isCheck});
to
this.setState({isCheck: !this.state.isCheck});
Then it works fine.
answered Nov 21 at 3:03
Anil Kumar
575310
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
There is typo on below line
this.setState = ({isCheck: !this.state.isCheck});
to
this.setState({isCheck: !this.state.isCheck});
Then it works fine.
answered Nov 21 at 3:03
Anil Kumar
575310
add a comment |
There is typo on below line
this.setState = ({isCheck: !this.state.isCheck});
to
this.setState({isCheck: !this.state.isCheck});
Then it works fine.
answered Nov 21 at 3:03
Anil Kumar
575310
add a comment |
There is typo on below line
this.setState = ({isCheck: !this.state.isCheck});
to
this.setState({isCheck: !this.state.isCheck});
Then it works fine.
answered Nov 21 at 3:03
Anil Kumar
575310
There is typo on below line
this.setState = ({isCheck: !this.state.isCheck});
to
this.setState({isCheck: !this.state.isCheck});
Then it works fine.
answered Nov 21 at 3:03
Anil Kumar
575310
answered Nov 21 at 3:03
Anil Kumar
575310
answered Nov 21 at 3:03
Anil Kumar
575310
answered Nov 21 at 3:03
Anil Kumar
575310
575310
add a comment |
add a comment |
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