摘要：
var str = '123,125,236,123,34568'; var reg = /^(\d+,?)+$/; console.log(reg.test(str)); if(reg.test(str)){ console.log("输入合法"); }else{ console.log("输入b 阅读全文
摘要：
<script> var _hai = ['9.9','68.8','109']; Array.prototype.sum = function () { for (var sum = i = 0; i < this.length; i++)sum += parseFloat(this[i]); r 阅读全文