JS 正则 获取URL参数
function getQueryString(name) { var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i"); var r = window.location.search.substr(1).match(reg); if (r != null) return unescape(r[2]); return null; }
这样调用:
alert(getQueryString("参数名1")); alert(getQueryString("参数名2")); alert(getQueryString("参数名3"));
<script type="text/javascript"> //获取QueryString的数组 function getQueryString() { var result = location.search.match(new RegExp("[\?\&][^\?\&]+=[^\?\&]+", "g")); if (result == null) { return ""; } for (var i = 0; i < result.length; i++) { result[i] = result[i].substring(1); } return result; } //根据QueryString参数名称获取值 function getQueryStringByName(name) { var result = location.search.match(new RegExp("[\?\&]" + name + "=([^\&]+)", "i")); if (result == null || result.length < 1) { return ""; } return result[1]; } //根据QueryString参数索引获取值 function getQueryStringByIndex(index) { if (index == null) { return ""; } var queryStringList = getQueryString(); if (index >= queryStringList.length) { return ""; } var result = queryStringList[index]; var startIndex = result.indexOf("=") + 1; result = result.substring(startIndex); return result; } alert(getQueryString()) alert(getQueryStringByName("user")) alert(getQueryStringByIndex("0")) alert(getQueryStringByIndex("1")) </script>