I'm trying to exclude minus and plus from input, but it's going wrong:
handleChange(event) {
const value = event.target.value.replace(/\+|-/ig, '');
this.setState({financialGoal: value});
}
Render input code:
<input style={{width: '150px'}} type="number" value={this.state.financialGoal} onChange={this.handleChange}/>
I tried to mimic your code and noticed that there's an issue on React with <input type='number' />. For workaround, check this example and try it yourself: https://codepen.io/zvona/pen/WjpKJX?editors=0010
You need to define it as normal input (type='text') with pattern for numbers only:
<input type="text" pattern="[0-9]*"
onInput={this.handleChange.bind(this)} value={this.state.financialGoal} />
And then to compare the validity of input:
const financialGoal = (evt.target.validity.valid) ?
evt.target.value : this.state.financialGoal;
The biggest caveat on this approach is when it comes to mobile --> where keyboard isn't in numeric but in normal alphabetic format.
Simply way in React
<input
onKeyPress={(event) => {
if (!/[0-9]/.test(event.key)) {
event.preventDefault();
}
}}
/>
one line of code
<input value={this.state.financialGoal} onChange={event => this.setState({financialGoal: event.target.value.replace(/\D/,'')})}/>