在这里,我提供了我要在密码输入字段中输入字符的代码,并且我不想在其中输入空格/空格,而是在其中输入了空格/空格,而不是在我打印输入值时不包含空格/ whitespace。请帮助我解决问题。
代码-
import React from "react";
import ReactDOM from "react-dom";
import "./styles.css";
import { Form, Input, Label } from "semantic-ui-react";
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
inputFieldData: {
pass: {
val: "",
error: false
}
}
};
}
inputChange = e => {
// prevent not to enter space charactes in password field while registering
const re = /^\S*$/;
let inputFieldData = this.state.inputFieldData;
const name = e.target.name;
if (re.test(e.target.value)) {
inputFieldData[name]["val"] = e.target.value;
console.log(e.target.value);
}
this.setState({ inputFieldData });
};
render() {
const { inputFieldData } = this.state;
return (
<div className="App">
<h1>Input box does not contain space in it</h1>
<h3>Input Value: {inputFieldData["pass"]["val"]}</h3>
<Form className="register-form">
<Form.Field>
<Input
type="password"
icon="user circle"
name="pass"
iconPosition="left"
placeholder="Enter Password"
onChange={this.inputChange}
error={inputFieldData["pass"]["error"]}
/>
{inputFieldData["pass"]["error"] && (
<Label basic color="red" pointing>
Field can not be empty
</Label>
)}
</Form.Field>
</Form>
</div>
);
}
}
const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);
答案 0 :(得分:1)
您需要将输入的值设置为inputFieldData.pass.val
,
否则为not bound to the state of your component。
<Input
value={inputFieldData.pass.val}
type="password"
icon="user circle"
name="pass"
iconPosition="left"
placeholder="Enter Password"
onChange={this.inputChange}
error={inputFieldData["pass"]["error"]}
/>
答案 1 :(得分:1)
我用正则表达式解决了这个问题
str.replace(/\s/g, '')
答案 2 :(得分:0)
您需要通过将value
属性添加到input
组件来使用受控组件模式(请参见此处https://reactjs.org/docs/forms.html#controlled-components)。
然后可以在handleChange
函数中添加空格修剪逻辑。
答案 3 :(得分:-1)
只需在 handleOnChange 函数中这样做:
handleOnChange = (e) => {
this.setState({
[e.target.name]: e.target.value.split(" ").join("")
});
};