Day34：学习尚上优选项目

记录React onClick 点击事件传参的 4 种方式

方式一：使用内联箭头函数

import React, { MouseEvent } from "react";

function App() {
    const handleClick = (event: MouseEvent<HTMLButtonElement>, name: string) => {
        console.log(event)
        console.log(name)
    }

    return (
        <div>
            <button onClick={(event) => handleClick(event, 'wj')}>点我</button>
        </div>
    );
}

export default App;

方式二：使用函数返回一个函数

import React, { MouseEvent } from "react";

function App() {
    const handleClick = (params: { name: string }) => (event: MouseEvent<HTMLButtonElement>) => {
        console.log(event)
        console.log(params)
    }
    
    return (
        <div>
            <button onClick={handleClick({ name: 'wj' })}>点我</button>
        </div>
    );
}

export default App;

方式三：使用useCallback hook

import React, { MouseEvent, useCallback } from "react";

function App() {
    const handleClick = useCallback((name: string, age: number) => {
        return (event: MouseEvent<HTMLButtonElement>) => {
            console.log(name)
            console.log(age)
            console.log(event)
        }
    }, [])
    
    return (
        <div>
            <button onClick={handleClick('wj', 18)}>点我</button>
        </div>
    );
}

export default App;

方式四：使用data attribute

import React, { MouseEvent } from "react";

function App() {
    const handleClick = (event: MouseEvent<HTMLButtonElement>) => {
        console.log(event)
        const name = event.currentTarget.getAttribute('data-name')
        console.log(name)
    }
    
    return (
        <div>
            <button data-name="from data attribute wj" onClick={handleClick}>点我</button>
        </div>
    );
}

export default App;

参考

3 Ways Of Passing Multiple Parameters To The OnClick Handler In React
Pass event and parameter onClick in React