JS常用方法集合

1.从URL中获取参数

/*面向对象写法*/
getQueryString: function(name) {
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
    var r = window.location.search.substr(1).match(reg);
        if (r != null) return (r[2]);
            return '';
}

/*非面向对象写法*/
function getQueryString(name) {
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
    var r = window.location.search.substr(1).match(reg);
        if (r != null) return (r[2]);
            return '';
}