如何在javascript中获取基本网址 [英] how to get the base url in javascript

问题描述

我正在使用 CodeIgniter 构建一个网站，我使用 base_url 这样的辅助函数

I am building a website with CodeIgniter, I have various resources that I load with the base_url helper function like this

<link rel="stylesheet" type="text/css" href="'.base_url('assets/css/themes/default.css').'" id="style_color"/>

产生(即 www.mysite.com)

which produces (i.e. www.mysite.com)

<link rel="stylesheet" type="text/css" href="http://www.mysite.com/assets/css/themes/default.css" id="style_color"/>

然后我可以像这样在javascript中将这个资源与另一个资源交换

I can then swap this resource with another in javascript like this

$('#style_color').attr("href", "assets/css/themes/" + color_ + ".css");

发生的情况是它会尝试在不使用 php 生成的绝对路径的情况下加载资源，所以我的解决方案是在每个带有 php 的页面中添加一个虚拟标签，如下所示

what happens is that it will try to load the resource without using the absolute path generated by php, so my solution was adding a dummy tag in every page with php like this

<div id="base_url" class="'.base_url().'"></div>

然后我将 javascript 行修改为

I then modified the javascript line to

$('#style_color').attr("href", $('#base_url').attr("class") + "assets/css/themes/" + color_ + ".css");

它确实有效，但它看起来一点也不优雅，所以，我很感激有关如何从 javascript 或任何其他解决方案中生成此基本 url 的任何帮助，谢谢 :)

it does work but it doesn't look elegant at all, so, I would appreciate any help on how to maybe generate this base url from within javascript or any other solution, thanks :)

我更喜欢仅使用 Javascript 的解决方案，因为我使用的是 CodeIgniter，一个 document.base_url 变量与从 protocol 到 index.php 的 url 段似乎很方便

I preferred a Javascript only solution and since I am using CodeIgniter, a document.base_url variable with the segments of the url from the protocol to the index.php seemed handy

document.base_url = base_url('index.php');

函数 base_url() 是

function base_url(segment){
   // get the segments
   pathArray = window.location.pathname.split( '/' );
   // find where the segment is located
   indexOfSegment = pathArray.indexOf(segment);
   // make base_url be the origin plus the path to the segment
   return window.location.origin + pathArray.slice(0,indexOfSegment).join('/') + '/';
}

推荐答案

JavaScript 中的基本 URL

您可以在 JavaScript 中使用 window.location

您可以通过这个 locations 对象访问该 URL 的片段.例如:

You have access to the segments of that URL via this locations object. For example:

// This article:
// https://stackoverflow.com/questions/21246818/how-to-get-the-base-url-in-javascript

var base_url = window.location.origin;
// "http://stackoverflow.com"

var host = window.location.host;
// stackoverflow.com

var pathArray = window.location.pathname.split( '/' );
// ["", "questions", "21246818", "how-to-get-the-base-url-in-javascript"]

在 Chrome Dev Tools 中，您只需在控制台中输入 window.location，它就会返回所有可用的属性.

In Chrome Dev Tools, you can simply enter window.location in your console and it will return all of the available properties.

可在 此 Stack Overflow 线程上进一步阅读

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