[前端]利用a标签获取url里所需的内容

function parseURL(url) {
    var a =  document.createElement('a');
    a.href = url;
    return {
        source: url,
        protocol: a.protocol.replace(':',''),
        host: a.hostname,
        port: a.port,
        query: a.search,
        params: (function(){
            var ret = {},
                seg = a.search.replace(/^?/,'').split('&'),
                len = seg.length, i = 0, s;
            for (;i<len;i++) {
                if (!seg[i]) { continue; }
                s = seg[i].split('=');
                ret[s[0]] = s[1];
            }
            return ret;
        })(),
        file: (a.pathname.match(//([^/?#]+)$/i) || [,''])[1],
        hash: a.hash.replace('#',''),
        path: a.pathname.replace(/^([^/])/,'/$1'),
        relative: (a.href.match(/tps?://[^/]+(.+)/) || [,''])[1],
        segments: a.pathname.replace(/^//,'').split('/')
    };
}

　获取file好像有错

　来源：http://james.padolsey.com/javascript/parsing-urls-with-the-dom/

iframe里获取父页面的url

function getParentUrl() {
					var url = null;
					if (parent !== window) {
						try {
							url = parent.location.href;
						} catch (e) {
							url = document.referrer;
						}
					}
					return url;
				}