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/ 和 _ 在 html 中是什么意思？

[英]What does / and _ mean in html?

原文 2019-02-10 14:43:04 5 1 html

What does _ and / mean in HTML? _ 和 / 在 HTML 中是什么意思？ I am trying to add an image to my site and would like to know what those functions do?我正在尝试将图像添加到我的网站，并想知道这些功能的作用是什么？

I've tried looking through google for the answer.我试过通过谷歌寻找答案。

1 个解决方案

(I initially wrote this answer thinking you were asking about javascript instead of html; just in case I've included both here because, eh, why not.) （我最初写这个答案时以为你在问 javascript 而不是 html；以防万一我把这两个都包括在这里，因为，嗯，为什么不呢。）

HTML HTML

_ has no specific meaning, it's just a letter. _没有特定的含义，只是一个字母。

/ is used in file paths (such as URLs) to denote a change in directory. /用于文件路径（例如 URL）以表示目录中的更改。 So <img src="/foo/bar/baz.gif"> would find an image named "baz.gif" inside a directory named "bar" inside a directory named "foo", at the root level of the website.因此， <img src="/foo/bar/baz.gif">会在网站根级别的名为“foo”的目录中名为“bar”的目录中找到名为“baz.gif”的图像。 For more detail, see https://developer.mozilla.org/en-US/docs/Learn/Common_questions/What_is_a_URL有关更多详细信息，请参阅https://developer.mozilla.org/en-US/docs/Learn/Common_questions/What_is_a_URL

Javascript Javascript

As in HTML, _ is just a character;在 HTML 中， _只是一个字符； it has no specific meaning in javascript.它在 javascript 中没有特定的含义。 It is used by a common utility library named " underscore ", and a competing library named " lodash ";它被一个名为“ underscore ”的通用实用程序库和一个名为“ lodash ”的竞争库使用； if you're seeing this in js code it's probably including one of those libraries.如果您在 js 代码中看到它，它可能包含这些库之一。 (This is similar to how $ is commonly used for jQuery.) （这类似于$通常用于 jQuery 的方式。）

/ does have a specific meaning in javascript; /在 javascript 中有特定的含义； it's used to denote a regular expression , or as the "division" symbol for math.它用于表示正则表达式，或作为数学的“除法”符号。