[英]How to validate bootstrap form?
I have made a form using bootstrap (Form component in reactjs) but when I try to click on submit button even if I do not type any input the form gets submitted. 我已经使用bootstrap(reactjs中的Form组件)制作了一个表单,但是当我尝试单击Submit按钮时,即使我没有键入任何输入,表单也会被提交。 How should I validate my form so that when all the input fields are filled then only form is submitted.
我应该如何验证我的表单,以便在填写所有输入字段时仅提交表单。
Form component: 表单组件:
class Form extends Component {
render(){
return(
<div>
<div id="center">
<form>
<div className="form-group">
<label htmlFor="firstname">First Name:</label>
<input type="firstname" className="form-control" id="firstname" onChange={this.setFirstName}/>
</div>
<div className="form-group">
<label htmlFor="lastname">Last Name:</label>
<input type="lastname" className="form-control" id="lastname" onChange={this.setLastName}/>
</div>
<div className="form-group">
<label htmlFor="email">Email address:</label>
<input type="email" className="form-control" id="email" onChange={this.setEmailId}/>
</div>
<div className="form-group">
<label htmlFor="bankacc">IBAN:</label>
<div id="deletebank" className="items">
<input type="bankacc" className="form-control" id="bankacc" onChange={this.setIban}/>
<button type="button" className="btn btn-default btn-sm">
<span className="glyphicon glyphicon-trash"></span>
</button>
</div>
</div>
<div className="form-group">
<label htmlFor="bankname">Bank Name:</label>
<input type="bankname" className="form-control" id="bankname" onChange={this.setBankName}/>
</div>
<div className="form-group">
<button type="button" className="btn btn-success" onClick={this.showUser}>Submit</button>
</div>
</form>
</div>
</div>
)}
}
Screenshot: 截图:
You can make use of html5's require property for simple form validation
<input type="firstname"
className="form-control"
id="firstname"
required
onChange={this.setFirstName}/>
Also one suggestion is that, I see you are calling different methods for every
fields. You can simple use
onChange={this.handleChange}
handleChange = (e) => {
const { value, id } = e.target;
this.setState({ [id]: e.target.value })
}
your state can be
state = {
lastname: '',
email: ''
} etc....
Your submit button will be
<button type="submit" className="btn btn-success" onSubmit= .
{this.handleSubmit}>Submit</button>
If you want to customize it, you can follow the link.
https://stackoverflow.com/questions/41296668/reactjs-form-input-validation
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