js 获取 url 参数

/**
 * 根据页面地址获取所有参数对象
 * @return Object{} 返回所有参数
 * ------------------------------
 * 根据页面地址获取指定参数对象
 * @return String 返回指定参数
 * ------------------------------
 * 示例: http://xxx/x.json?name=test&id=100
 * $.getPageParams() --> { name:"test", id:"100" }
 * $.getPageParams("name") --> "test"
 * $.getPageParams("id") --> "100"
 * ------------------------------
 */
$.getPageParams = function(name){
	var params = {};
	var string = window.location.search.substr(1);
	if(string) {
		var array = string.split('&');
		$.each(array, function(idx, text){
			var words= text.split('=');
			params[words[0]] = decodeURIComponent(words[1]);
		});
	}
	return name == null ? params : params[name];
};

　　

// 采用正则表达式获取地址栏参数
function GetQueryString(name)
{
     var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
     var r = window.location.search.substr(1).match(reg);
     if(r!=null)return  decodeURIComponent(r[2]); return null;
}

window.location

 console.log(window.location.href);
 console.log(window.location.protocol +"//"+ window.location.hostname +":"+ window.location.port + window.location.pathname);