js操做url

轉譯url地址「&」--「$map;」

function unescapeHTML(a){
    a = "" + a;
    return a.replace(/&lt;/g, "<").replace(/&gt;/g, ">").replace(/&amp;/g, "&").replace(/&quot;/g, '"').replace(/&apos;/g, "'");
}

獲取url查詢字符串指定參數的值

function GetNowQueryStr(name) { 
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)","i"); 
    var r = window.location.search.substr(1).match(reg); 
    if (r!=null) return (r[2]); return 'nul'; 
}

decodeURI(GetNowQueryStr('a'))