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                ### 1. 控制臺輸出什么? ```html <input type="button" value="aaa"> <input type="button" value="bbb"> <input type="button" value="ccc"> <input type="button" value="ddd"> ``` ```js window.onload = function(){ var buttons = document.getElementsByTagName('input') for(var i=0;i<buttons.length;i++){ buttons[i].onclick=function(){ console.log(i) } } } ``` ### 2. 如何合并數組a和b? ```js var a = [1,2,3] var b = [4,5,6] ``` ### 3. 按要求寫函數 > 將每個單詞的首字母移動到詞尾,并在每個單詞后添加"ay" ```js pigIt('Pig latin is cool') // igPay atinlay siay oolcay ``` ### 4. 判斷數據類型的方法有哪些? ### 5.寫兩個數組去重的方法 ### 6.輸出的是什么? ```js var obj={ a:1, b:2, plus:()=>{ return this.a+this.b; } } obj.plus() ``` ### 7. 如何判斷字符串以字母開頭,后面可以是數字,下劃線,字母,長度為6-30 ### 8. 每隔一秒輸出i值 ```js // 每隔一秒輸出一次i值 for(var i = 0; i < 5; i++){ // TODO } ``` ### 9. 輸出什么? ```js var a = {} var b = { key: "a" } var c = { key: "c" } a[b] = "123"; a[c] = "456"; console.log(a[b]) ```
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