<div className="mb-1">
Image <span className="font-css top">*</span>
<div className="">
<input type="file" id="file-input" name="ImageStyle"/>
</div>
</div>这是我提供的片段，我用来在 react js 中从设备中选择文件，使用它我可以选择文件，并且还显示文件名我现在想要的是将此文件存储在 S3 或任何地方和从那里获取它的 URL 并使用 fetch api 调用将它发布到我的服务器。
我想知道如何将令牌保存到本地存储.我正在注册并生成相关令牌,我必须将其保存到本地存储.而且当我打开登录页面时,我必须获取它以检查它.
我的代码:
import React, { Component } from 'react';
import { Link } from 'react-router'
class Register extends Component {
constructor(props) {
super(props);
this.state = {
inputfirstname: '',
inputlastname: '' ,
inputemail: '' ,
inputpassword: ''
};
this.handleFirstName = this.handleFirstName.bind(this);
this.handleLastName = this.handleLastName.bind(this);
this.handleSubmit = this.handleSubmit.bind(this);
this.handleEmail = this.handleEmail.bind(this);
this.handlePassword = this.handlePassword.bind(this);
}
static contextTypes = {
router: React.PropTypes.object.isRequired
}
handleFirstName(event) {
this.setState({inputfirstname: event.target.value});
}
handleLastName(event) {
this.setState({inputlastname: event.target.value});
}
handleEmail(event) {
this.setState({inputemail: event.target.value});
}
handlePassword(event) {
this.setState({inputpassword: event.target.value});
} …import React, { Component } from 'react';
class BigText extends Component {
constructor(props) {
super(props);
this.state = {
title: '',
text: '',
summary: ''
};
this.handleInputChange = this.handleInputChange.bind(this);
}
handleInputChange(event) {
this.setState({
[event.target.name]: event.target.value
});
}
render() {
return (
<div>
<div>
<div className="row animated fadeIn">
<div className="px-1" style={{ width:100 + '%' }}><br />
<div className="mb-1">
<input type="text"
className="form-control"
placeholder="Title"
name="title"
value={this.state.title}
onChange={this.handleInputChange}
/>
</div>
<div className="mb-1">
<textarea
className="form-control"
placeholder="Text"
name="text"
value={this.state.text}
onChange={this.handleInputChange}
/>
</div>
<div className="mb-1">
<textarea
className="form-control"
placeholder="Summary" …render() {
const rowLeft = [];
const rowRight = [];
let a = this.props.ntn;
Object.keys(this.props.ntn).map((keyName, keyIndex) =>{
if (keyName === "_id" || keyName === "name" || keyName === "description" || keyName === "instant" || keyName === "active") {
if (keyName === "beacon" || keyName === "group") {
return rowLeft.push(<InfoRow notification={keyName} notificationValue={a[keyName].name.toString()} key={keyIndex}/>)
}
else if (a[keyName].offers) {
return rowLeft.push(<InfoRow notification={keyName} notificationValue={a[keyName].offers.toString()} key={keyIndex}/>)
}
else {
return rowLeft.push(<InfoRow notification={keyName} notificationValue={a[keyName].toString()} key={keyIndex}/>)
}}
});
Object.keys(this.props.ntn).map((keyName, keyIndex) =>{
if (keyName === "levelType" || …<input
defaultValue={this.props.str.name}
ref={(input) => { this.state.name = input; }}
name="name"
type="text"
className="form-control"
onChange={this.handleInputChange}
/>
handleInputChange(event) {
this.setState({
[event.target.name]: event.target.value
});
}
if(this.state.name.value === "") {
this.msg.show('Required fields can not be empty', {
time: 2000,
type: 'info',
icon: <img src="img/avatars/info.png" role="presentation"/>
});
}
我正在尝试设置默认值,并希望也可以访问它.我确实喜欢这个并且访问了值,this.state.name.value但事情是它的工作,但显示警告
不要直接改变状态,使用setState()react/no-direct-mutation-state.