绑定多个事件到一个监听器(没有JQuery)?

在处理浏览器事件时，我已经开始为移动设备整合Safari的touchEvents。我发现addeventlistener与条件语句堆积在一起。这个项目不能使用JQuery。

一个标准的事件监听器:

/* option 1 */
window.addEventListener('mousemove', this.mouseMoveHandler, false);
window.addEventListener('touchmove', this.mouseMoveHandler, false);

/* option 2, only enables the required event */
var isTouchEnabled = window.Touch || false;
window.addEventListener(isTouchEnabled ? 'touchmove' : 'mousemove', this.mouseMoveHandler, false);

JQuery的bind允许多个事件，如下所示:

$(window).bind('mousemove touchmove', function(e) {
    //do something;
});

是否有一种方法可以像JQuery示例中那样组合这两个事件侦听器?例:

window.addEventListener('mousemove touchmove', this.mouseMoveHandler, false);

任何建议或提示，感谢!

当前回答

ES2015:

let el = document.getElementById("el");
let handler =()=> console.log("changed");
['change', 'keyup', 'cut'].forEach(event => el.addEventListener(event, handler));

2016-04-04 11:30:16

其他回答

一种方法是:

const troll = document.getElementById('troll'); [' mousedown ', ' mouseup ']。forEach(type => { If (type === 'mousedown') { 巨魔。addEventListener(type， () => console.log('鼠标down')); ｝ Else if (type === 'mouseup') { 巨魔。addEventListener(type， () => console.log('鼠标打开')); ｝ })； img { 宽度:100 px; 光标:指针; ｝ < div id = "钓鱼" > <img src="http://images.mmorpg.com/features/7909/images/Troll.png" alt="Troll"> < / div >

2018-05-06 20:06:08

ES2015:

let el = document.getElementById("el");
let handler =()=> console.log("changed");
['change', 'keyup', 'cut'].forEach(event => el.addEventListener(event, handler));

2016-04-04 11:30:16

还可以使用原型将自定义函数绑定到所有元素

Node.prototype.addEventListeners = function(eventNames, eventFunction){
    for (eventName of eventNames.split(' '))
        this.addEventListener(eventName, eventFunction);
}

然后使用它

document.body.addEventListeners("mousedown touchdown", myFunction)

2021-02-28 07:39:05

理清以撒的回答:

['mousemove', 'touchmove'].forEach(function(e) {
  window.addEventListener(e, mouseMoveHandler);
});

EDIT

ES6 helper函数:

function addMultipleEventListener(element, events, handler) {
  events.forEach(e => element.addEventListener(e, handler))
}

2017-07-14 07:14:40

// BAD: One for each event - Repeat code
textarea.addEventListener('keypress', (event) => callPreview);
textarea.addEventListener('change', (event) => callPreview);

// GOOD: One run for multiple events
"keypress change".split(" ").forEach((eventName) => textarea.addEventListener(eventName, callPreview));

2022-07-11 20:27:46

绑定多个事件到一个监听器(没有JQuery)?

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