帮助重构一小段Javascript代码，以识别用户的引荐来源 [英] Help refactor a small piece of Javascript code which identifies user's referrer source

问题描述

我已经编写了以下一小段javascript（基于出色的 parseURI 函数）以识别用户的来源。我是Java语言的新手，尽管下面的代码有效，但是想知道是否有更有效的方法来实现相同的结果？

I've written the following small piece of javascript (Based on the excellent parseURI function) to identify where the user originated from. I am new to Javascript, and although the code below works, was wondering if there is a more efficient method of achieving this same result?

try {
        var path = parseUri(window.location).path;

        var host = parseUri(document.referrer).host;
        if (host == '') {
                alert('no referrer');
                }

        else if (host.search(/google/) != -1 || host.search(/bing/) != -1 || host.search(/yahoo/) != -1) {
                alert('Search Engine');
                }
        else {
                alert('other');
                }
        } 

catch(err) {}

推荐答案

您可以使用其他搜索来简化主机检查：

You can simplify the host check using alternative searches:

else if (host.search(/google|bing|yahoo/) != -1 {

我也会在提取主机中的无推荐人错误之前，请先尝试测试文档推荐人。

I'd also be tempted to test document referrer before extracting the host for your "no referrer" error.

（我尚未测试过）。

这篇关于帮助重构一小段Javascript代码，以识别用户的引荐来源的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！