2.3jQuery选择器和事件-事件之绑定、解除绑定事件

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<!DOCTYPE html><html><head lang="en">    <meta charset="UTF-8">    <title></title>    <script src="jquery-3.1.1.min.js"></script>    <script src="2.js"></script></head><body>          <button id="clickMeBtn">Click me</button></body></html>
$(document).ready(function(){    // $("#clickMeBtn").click(function(){    //  alert("hello")    // });/*  $("#clickMeBtn").bind("click",clickHandler1);    $("#clickMeBtn").bind("click",clickHandler2);    $("#clickMeBtn").unbind("click",clickHandler1);*/    $("#clickMeBtn").on("click",clickHandler1);    $("#clickMeBtn").on("click",clickHandler2);    $("#clickMeBtn").off("click",clickHandler1);});function clickHandler1(e){    console.log("clickHandler1")}function clickHandler2(e){    console.log("clickHandler2")}
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