摘要:
//小结// toExponential 保留小数点( 0-20 bit ) document.writeln(Math.PI.toExponential(0)); //3e+0 document.writeln(Math.PI.toExponential(2)); //3.14e+0... 阅读全文
posted @ 2015-12-01 12:02
Cynthia娆墨旧染
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摘要:
//小结// string.charAt(pos) 返回string中pos所在位置的字符 var name = "Cynthia"; var i = name.charAt(0) // alert(i) //C// string.charCodeAt(pos) 返回string... 阅读全文
posted @ 2015-12-01 12:00
Cynthia娆墨旧染
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