?

?

??獲取事件列表

getEventListeners(window)//獲取window綁定的所有監聽事件列表//----------------------------------------getEventListeners(document.querySelector("選擇器"))//獲取指定DOM的所有監聽事件列表

這里以CSDN為例，F12當前頁面在Console選項卡輸入?getEventListeners(window),回車執行代碼后會輸出以下對象：

{"load": [{"useCapture": false, "passive": false, "once": false, "type": "load"},{"useCapture": false, "passive": false, "once": false, "type": "load"},{"useCapture": false, "passive": false, "once": false, "type": "load"},{"useCapture": false, "passive": false, "once": false, "type": "load"},{"useCapture": false, "passive": false, "once": false, "type": "load"}],"unload": [{"useCapture": false, "passive": false, "once": false, "type": "unload"},{"useCapture": false, "passive": false, "once": false, "type": "unload"},{"useCapture": false, "passive": false, "once": false, "type": "unload"},{"useCapture": false, "passive": false, "once": false, "type": "unload"},{"useCapture": false, "passive": false, "once": false, "type": "unload"}],"beforeunload": [{"useCapture": false, "passive": false, "once": false, "type": "beforeunload"}],"pagehide": [{"useCapture": false, "passive": false, "once": false, "type": "pagehide"},{"useCapture": false, "passive": false, "once": false, "type": "pagehide"}],"error": [{"useCapture": false, "passive": false, "once": false, "type": "error"}],"keydown": [{"useCapture": false, "passive": false, "once": false, "type": "keydown"}],"resize": [{"useCapture": false, "passive": false, "once": false, "type": "resize"},{"useCapture": false, "passive": false, "once": false, "type": "resize"},{"useCapture": false, "passive": false, "once": false, "type": "resize"},{"useCapture": false, "passive": false, "once": false, "type": "resize"}],"scroll": [{"useCapture": false, "passive": false, "once": false, "type": "scroll"},{"useCapture": false, "passive": false, "once": false, "type": "scroll"},{"useCapture": false, "passive": false, "once": false, "type": "scroll"},{"useCapture": false, "passive": false, "once": false, "type": "scroll"}],"orientationchange": [{"useCapture": false, "passive": false, "once": false, "type": "orientationchange"}],"pageshow": [{"useCapture": false, "passive": false, "once": false, "type": "pageshow"}],"focus": [{"useCapture": false, "passive": false, "once": false, "type": "focus"}],"blur": [{"useCapture": false, "passive": false, "once": false, "type": "blur"}],"DOMContentLoaded": [{"useCapture": false, "passive": false, "once": false, "type": "DOMContentLoaded"},{"useCapture": false, "passive": false, "once": false, "type": "DOMContentLoaded"},{"useCapture": false, "passive": false, "once": false, "type": "DOMContentLoaded"}],"keyup": [{"useCapture": false, "passive": false, "once": false, "type": "keyup"}]
};

獲取事件綁定的方法源碼

getEventListeners(window).事件名[0].listener;//----------------------------------------getEventListeners(document.querySelector("選擇器")).事件名[0].listener;

觸發事件綁定的方法

getEventListeners(window).事件名[0].listener();//----------------------------------------getEventListeners(document.querySelector("選擇器")).事件名[0].listener();

移除對應綁定的事件監聽（尤其是某些頁面禁止了復制、切屏的時候屢試不爽，你懂得[壞笑]）

var event=getEventListeners(window).事件名[0];
window.removeEventListener(event.type,event.listener);//----------------------------------------var dom=document.querySelector("選擇器");
var event=getEventListeners(dom).事件名[0];
dom.removeEventListener(event.type,event.listener);

批量移除所有監聽事件（硬核！）

var events=getEventListeners(window)
for (var eventName in events) {var eventItems = events[eventName];console.log(event);for (var i = 0, l = eventItems.length; i < l; i++) {var eventItem = eventItems[i];window.removeEventListener(eventItem.type,eventItem.listener);}
}//----------------------------------------var dom=document.querySelector("選擇器")
var events=getEventListeners(dom)
for (var eventName in events) {var eventItems = events[eventName];console.log(event);for (var i = 0, l = eventItems.length; i < l; i++) {var eventItem = eventItems[i];dom.removeEventListener(eventItem.type,eventItem.listener);}
}

批量移除并打印指定DOM及其子元素所有監聽方法代碼（實用！）

var getAllEvents = function (sel) {var doms = [document.querySelector(sel)].concat([].slice.call(document.querySelectorAll(sel + " *")));//包括元素自己for (var i = 0, l = doms.length; i < l; i++) {var dom = doms[i];var events = getEventListeners(dom);for (var eventName in events) {var eventItems = events[eventName];for (var j = 0, len = eventItems.length; j < len; j++) {var eventItem = eventItems[j];dom.removeEventListener(eventItem.type, eventItem.listener);//移除事件console.log(`事件[${eventItem.type}]監聽方法`, eventItem.listener);}}}
};
getAllEvents(".className");

打印效果

總結

以上是生活随笔為你收集整理的【冷知识】获取网页所有的监听事件类型、方法。请认准getEventListeners的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。