黑马旅游网 解析url查询字符串

function getUrlParam(name) {
    let reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
    let r = window.location.search.substr(1).match(reg);
    return r != null ? r[2] : null;
}

function getQueryArgs(){
    let qs=location.search.length ? location.search.substring(1) : "";
    let args={};
    let items=qs.length ? qs.split("&") : [];

    for(let item of items){
        let pair=item.split("=");
        if(pair[0].length){
            args[decodeURIComponent(pair[0])]= decodeURIComponent(pair[1]);
        }
    }
    return args;
}

function getQueryStringArgs(){
    var qs=location.search.length ? location.search.substring(1) : "";
    var args={};
    var items=qs.length ? qs.split("&") : [];
    var item=null,
        name=null,
        value=null,
        len=items.length;
    for(var i=0;i<len;i++){
        item=items[i].split("=");
        if(item[0].length){
            name=decodeURIComponent(item[0]);
            value=decodeURIComponent(item[1]);
            args[name]=value;
        }
    }
    return args;
}

function getQuery() {
    let search = location.search;
    // alert(search);

    //没有查询参数
    let i = search.indexOf("?");
    if( i == -1){
        return {};
    };

    //去除问号
    search = search.substring(i + 1);

    //得到参数
    let result = {};
    let items = search.split("&");
    for(let item of items){
        let split = item.split("=");
        // alert(split[0]);
        // alert(split[1]);
        if(split[0]){
            result[decodeURIComponent(split[0])] = decodeURIComponent(split[1]);
        }
    }
    return result;
}