Fw: [討論] 面試時碰到的一些 Javascript考題

看板Ajax作者WJames (星晨)時間12年前 (2013/06/14 11:32)推噓0(0推 0噓 1→)

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※ [本文轉錄自 Web_Design 看板 #1Hk5i6oO ] 作者: WJames (星晨) 看板: Web_Design 標題: [討論] Javascript 一些問題時間: Wed Jun 12 19:26:59 2013 這不是作業，也不是 take home exam。這是小弟在應徵工作時碰到的 JS考題。免試早已經結束，只是當時有用手機將考題拍下來。想說有機會可以上來跟強者討論討論，很想知道正確解答，跟我的作答差距多少，由於公司也沒告訴我正確答案(筆試)，試卷他們收走我也不好意思問，就post在版上，讓各位前輩強者有興趣的話回答一下囉。也算是分享應徵考試的經驗給大家。 1. which is equl to the condition if( ua !== 'IE 6'&& ua != 'IE 7') A) if( ua === 'IE 6' || ua === 'IE 7') B) if( ua === 'IE 6' && ua === 'IE 7') C) if( !( ua === 'IE 6'|| ua === 'IE 7') ) D) if( !( ua === 'IE 6'&& ua === 'IE 7') ) 2. Which is false ? A) 1 == '1' B) NaN == NaN C) 1 == [1]+[] D) undefind === undefined 3. Which is true ? A) 1=== true B) Number('1px') C) typrof [1,2,3] == 'array' D) '0' 4. What is b : var a = [ 1, 2, 3 ]; var b = a; a.push(5); console.log(b) 5. Please answer below two "this"? $('#foo').on('click', function(e){ console.log( this ); //What is this ? setTimeout( function(){ console.log( this ); //What is this ? }, 1000} }) 6. How can get the 'hello': var obj = { 1: 'hello', 2: 'world'} A) obj.1 B) obj[0] C) obj[1] D) obj.2 7.Please answer all below typeof: typeof function(){} typeof new Date() typeof {} typeof new Array() 8.What do you think foo() is ? if(1) function foo(){ return 'a'} else function foo(){ return 'b'} console.log( foo() ) 9.What is the console.log output? function foo(){ return this; } console.log( foo.call( foo ) ) 10.Please explain what is the difference between "setTimeout()" and "setInterval()" ? 11.Please explain what the use of "preventDefault()" and ""stopPropagation()" in Event Object ? 以上就這幾題至於是哪家公司的面試題目我就不透漏了，透露出來好像不太好 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 220.136.44.140 ※ 編輯: WJames 來自: 220.136.44.140 (06/12 19:28)