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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                ## **this關鍵字指向問題** ### 1.在事件中,指向當前對象 ``` <div id="div">div</div> <script> var div = document.getElementById("div"); div.onclick=function(){ console.log(this) } </script> ``` ### 2.在方法中,誰調用方法指向誰 ``` <script> setTimeout(()=>{ console.log(this) }) </script> ``` ### 3.在構造函數中,指向實例化的對象 ``` <script> function Person(name,age){ this.name = name; this.age = age; this.sayThis = function(){ console.log(this); } } var a = new Person("a",12); a.sayThis(); </script> ```
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