javascript / jquery将尾部斜杠添加到url（如果不存在） [英] javascript/jquery add trailing slash to url (if not present)

问题描述

我正在制作一个小型网络应用，用户输入一个服务器网址，通过AJAX请求从中提取大量数据。

I'm making a small web app in which a user enters a server URL from which it pulls a load of data with an AJAX request.

由于用户必须手动输入URL，人们通常会忘记尾部斜杠，即使它是必需的（因为一些数据被附加到输入的URL）。我需要一种方法来检查是否存在斜杠，如果没有，则添加它。

Since the user has to enter the URL manually, people generally forget the trailing slash, even though it's required (as some data is appended to the url entered). I need a way to check if the slash is present, and if not, add it.

这似乎是一个问题，jQuery会有一个单行，有人知道怎么做或者我应该为它写一个JS函数吗？

This seems like a problem that jQuery would have a one-liner for, does anyone know how to do this or should I write a JS function for it?

推荐答案

var lastChar = url.substr(-1); // Selects the last character
if (lastChar != '/') {         // If the last character is not a slash
   url = url + '/';            // Append a slash to it.
}

临时变量名可以省略，并直接嵌入断言中： / p>

The temporary variable name can be omitted, and directly embedded in the assertion:

if (url.substr(-1) != '/') url += '/';

由于目标是使用单行更改网址，因此还可以使用以下解决方案：

Since the goal is changing the url with a one-liner, the following solution can also be used:

url = url.replace(/\/?$/, '/');

• 如果尾随斜杠存在，则替换为 / 。


• 如果尾部斜杠不存在，则在末尾附加 / （确切地说：尾部锚点替换为 / ）。


• If the trailing slash exists, it is replaced with /.
• If the trailing slash does not exist, a / is appended to the end (to be exact: The trailing anchor is replaced with /).

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