Use this:

if(typeof(String.prototype.trim) === "undefined")
{
    String.prototype.trim = function() 
    {
        return String(this).replace(/^\s+|\s+$/g, '');
    };
}

The trim function will now be available as a first-class function on your strings. For example:

" dog".trim() === "dog" //true

EDIT: Took J-P's suggestion to combine the regex patterns into one. Also added the global modifier per Christoph's suggestion.

Took Matthew Crumley's idea about sniffing on the trim function prior to recreating it. This is done in case the version of JavaScript used on the client is more recent and therefore has its own, native trim function.

js实现去除首尾空格_xiaobing_hope的专栏-CSDN博客

https://blog.csdn.net/xiaobing_hope/article/details/50385485

2015年12月23日 ... 关于去掉两头空格,jquery库提供了$.trim()方法,可是JS呢,我写 ... 关于 JavaScript 里的trim()/strip() 方法在其他语言中常常用trim()/strip() 方法脱去不 ... abc '.trim(); // 'abc' 这是去除首尾空格的办法那么有没办法去除首尾 ... 题目内容: 用户输入一个字符串,首尾有多余的空格,编写程序来去除这些多余的空格。

String strip() for JavaScript? - Stack Overflow

https://stackoverflow.com/questions/1418050/string-strip-for-javascript

Closed 5 years ago. What's a clean and efficient JavaScript implementation to strip leading and trailing spaces from a string? For example: " dog ...

js去掉首尾空格_webbrowser 调用js_webbrowser 运行js-华为云

https://www.huaweicloud.com/term/topic-2304731.html

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JS中有去字符串头尾空格的函数么?-CSDN论坛

https://bbs.csdn.net/topics/30323480

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Strip HTML Tags in JavaScript | CSS-Tricks

https://css-tricks.com/snippets/javascript/strip-html-tags-in-javascript/

Jul 23, 2020 ... That is awful advice! If for some reason (like malicious intent of users) the html argument contains a script tag, you've now opened up for XSS ...

JS去掉首尾空格简单方法大全(原生正则jquery)_lxy19880708的专栏 ...

https://blog.csdn.net/lxy19880708/article/details/100150336

2019年8月30日 ... JS去除空格的方法目前共有12种: 实现1 String.prototype.trim ... 地使用trim、ltrim 或rtrim,但在js中没有这3个内置方法,需要手工编写。 ... 关于JavaScript 里的 trim()/strip() 方法在其他语言中常常用trim()/strip() 方法脱去不必要的空格等元素。 ... 大家可能会说js删除字符串首尾空格有什么好说的, 哪个不会啊。

Python strip()方法| 菜鸟教程

https://www.runoob.com/python/att-string-strip.html

Python strip() 方法用于移除字符串头尾指定的字符(默认为空格或换行符)或字符 ... print str.strip( '0' ); # 去除首尾字符0 str2 = " Runoob "; # 去除首尾空格 print ...

去除首尾空格- CSDN

https://www.csdn.net/tags/MtTaIgysNjk1NTgtYmxvZwO0O0OO0O0O.html

csdn已为您找到关于去除首尾空格相关内容,包含去除首尾空格相关文档代码 ... 在 Shell中不像其他语言有strip()来处理,不过也是可以使用诸如awk等命令来处理。 ... 空格,jquery库提供了$.trim()方法,可是JS呢,我写了.trim(),在FF里有效果, 但 ... 转入正题,简单的记录一下Java中的字符串的相关操作——去除字符串中首尾  ...

Strip HTML from Text JavaScript - Stack Overflow

https://stackoverflow.com/questions/822452/strip-html-from-text-javascript

If you're running in a browser, then the easiest way is just to let the browser do it for you... function stripHtml(html) { let tmp = document.

String strip() in JavaScript - GeeksforGeeks

https://www.geeksforgeeks.org/string-strip-in-javascript/

Jun 8, 2020 ... Method 1: Here, we will be using trim() method. We can strip a string using trim() method and can remove unnecessary trailing and leading ...

Debug Search - 编程领域的垂直搜索

https://debug.zhuanfou.com/

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python中strip,lstrip,rstrip简介- starof - 博客园

https://www.cnblogs.com/starof/p/4651288.html

2015年7月16日 ...没有传入参数时,默认去除首尾空格。 lstrip和rstrip原理一样。 举例:. 复制代码. >>> testString="saaaay yes ...

The Genius of JS Bach's "Crab Canon" Visualized on a Möbius Strip ...

https://www.openculture.com/2013/02/the_genius_of_js_bachs_crab_canon_visualized_on_a_mobius_strip.html

Feb 11, 2013 ... Any experienced composer can write a crab cannon. While I agree that Bach did compose some pieces of great complexity, this cannon is not ...

How to strip HTML from a string (extract only text content) in Javascript

https://ourcodeworld.com/articles/read/376/how-to-strip-html-from-a-string-extract-only-text-content-in-javascript

Feb 8, 2017 ... In this article, you will find 3 ways to strip the html tags from a string in Javascript. 1. Create a temporary DOM element and retrieve the text. This is ...

Document and website structure - Learn web development | MDN

https://developer.mozilla.org/en-US/docs/Learn/HTML/Introduction_to_HTML/Document_and_website_structure

Feb 24, 2021 ... header: Usually a big strip across the top with a big heading, logo, ... src="https:// cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.3/html5shiv.js"></ ...

What is the difference between rope lights and LED strip lights?

https://www.flexfireleds.com/what-is-the-difference-between-rope-lights-and-led-strip-lights/

Rope lighting has been on the market for a long time and has a variety of uses. Basically, it is a long cylindrical tube that houses an internal light source placed ...

strip_tags - Manual - PHP

https://www.php.net/manual/en/function.strip-tags.php

strip_tags — Strip HTML and PHP tags from a string ... attributes such as class, id and style, this will strip all javascript including event triggers in formatting tags.

Python String strip() Method

https://www.w3schools.com/python/ref_string_strip.asp

The strip() method removes any leading (spaces at the beginning) and trailing ( spaces at the end) characters (space is the default leading character to remove) ...