js分析url

1.通过正则：

function getQueryStr(str){  
        var rs = new RegExp("(^|)"+str+"=([^\&]*)(\&|$)","gi").exec(LocString), tmp;  
      
        if(tmp=rs){  
            return tmp[2];  
        }  
      
        // parameter cannot be found  
        return "";  
    }  
    id = getQueryStr("id");

 

 

2.用jquery先获得url，再拆分字符串

    // var LocString=String(window.document.location.href);   获得url
    var url = location.search; //获取url中"?"符后的字串
    var id = null;
    if(url != null && url.indexOf("?") != -1){
    	var index = url.indexOf("id=");
    	var start = 0;
    	if (index != -1) {
    		start = index + 3;
    	}
    	var end = url.indexOf("&", start);
    	if (end == -1) {
    		end = url.length;
    	}

    	id = url.substring(start, end); // 获取get方式传来参数中的id对应值
    	$("#id").val(id);
    }