摘要：
对原数组不改变var arr = [1,2,3,4,5]; var hd = arr.slice(1); console.log(hd); [ 2, 3, 4, 5 ] console.log(arr); [ 1, 2, 3, 4, 5 ] 阅读全文
posted @ 2021-02-26 21:30
AngDH
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摘要：
var arr = [1,2,3,4,5]; var hd = arr.splice(0,3); console.log(hd);[ 1, 2, 3 ] console.log(arr);[ 4, 5 ] var arr = [1,2,3,4,5]; var hd = arr.splice(0,3, 阅读全文
posted @ 2021-02-26 21:27
AngDH
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var div = document.querySelectorAll("div"); console.log(Array.from(div));Array.from(div,function(item){ item.style.backgroundColor="red"; return item; 阅读全文
posted @ 2021-02-26 20:46
AngDH
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摘要：
let cc = new Array(1,2,3); console.log(cc);[ 1, 2, 3 ] var ca = new Array(3); console.log(ca);[ <3 empty slots> ]var arr = Array.of(4);console.log(arr 阅读全文
posted @ 2021-02-26 20:33
AngDH
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const div = document.querySelectorAll("div"); [...div].map(function(item){ item.addEventListener("click",function(){ #todo }); }); 阅读全文
posted @ 2021-02-26 20:23
AngDH
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