1.substring () 用于提取字符串中 介于兩個(gè)指定下標(biāo)之間的字符萧吠。 stringObject.substring(start,[sto...

1. word-break 屬性 word-break: normal|break-all|keep-all;keep-all：只能在半角空格或...

超小屏 0 --- 768px xs 小屏 768--- 992px sm 中屏 992--- 1200px md 大屏 ...

var codeLength = function (cname, num) { var re = /^[0-9a-zA-Z]*$/g;...

1.將時(shí)間轉(zhuǎn)為毫秒數(shù) ex :var date = new Date() --Wed Feb 28 2018 15:43:44 ...

1.獲取元素Id document.getElementById( ); ex: var test=document.getEleme...