摘要:
例子1: var num = "112233.99887766";console.log(num.substring(0,(num.indexOf(".")+5)));返回:112233.9988 例子2: var item = "https://www.oss-cn-hangzhou.aliyun 阅读全文
posted @ 2019-01-14 13:42
刘丑丑鱼香肉丝
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