如果您想检测带有http:// OR而不带有http://或ftp或其他可能的情况(如删除末尾的标点符号)的链接，请查看这段代码。

https://jsfiddle.net/AndrewKang/xtfjn8g3/

使用它的一个简单方法是使用NPM

npm install --save url-knife

检测文本中的url并使其可点击。

const detectURLInText = (contentElement) => { const elem = document.querySelector(contentElement); 初步的。innerHTML = elem.innerHTML.replace (/ (https ?: \ \ / ^ \ [s] +) / g,”<类=链接的href = " $ 1 " > < / > ' 1美元) 返回elem ｝ detectURLInText(“# myContent”); < div id = " myContent " > 地狱的世界!，检测文本中的url并使其可点击。 IP地址:https://123.0.1.890:8080 网站:https://any-domain.com < / div >

首先，你需要一个匹配url的正则表达式。这很难做到。看这里，这里和这里:

...almost anything is a valid URL. There are some punctuation rules for splitting it up. Absent any punctuation, you still have a valid URL. Check the RFC carefully and see if you can construct an "invalid" URL. The rules are very flexible. For example ::::: is a valid URL. The path is ":::::". A pretty stupid filename, but a valid filename. Also, ///// is a valid URL. The netloc ("hostname") is "". The path is "///". Again, stupid. Also valid. This URL normalizes to "///" which is the equivalent. Something like "bad://///worse/////" is perfectly valid. Dumb but valid.

无论如何，这个答案并不是为了给您最好的正则表达式，而是为了证明如何使用JavaScript在文本中进行字符串包装。

所以让我们用这一个:/ (https ?: \ / \ / ^ \ [s] +) / g

同样，这是一个糟糕的正则表达式。它会有很多假阳性。但是对于这个例子来说已经足够好了。

函数urlify(text) { var urlRegex = /(https?:\/\/[^\s]+)/g; 返回文本。替换(urlRegex，函数(url) { 返回'<a href="' + url + '">' + url + '</a>'; }) //或者 //返回文本。替换(urlRegex， '<a href="$1">$1</a>') ｝ var text = '在http://www.example.com和http://stackoverflow.com上找到我'; Var HTML = urlify(文本); console.log (html)

// html now looks like:
// "Find me at <a href="http://www.example.com">http://www.example.com</a> and also at <a href="http://stackoverflow.com">http://stackoverflow.com</a>"

所以总的来说:

$$('#pad dl dd').each(function(element) {
    element.innerHTML = urlify(element.innerHTML);
});

下面是我最终使用的正则表达式:

var urlRegex =/(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig;

这不包括URL中的尾随标点符号。新月的功能就像一个魅力:) 所以:

function linkify(text) {
    var urlRegex =/(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig;
    return text.replace(urlRegex, function(url) {
        return '<a href="' + url + '">' + url + '</a>';
    });
}

有一个现有的npm包:url-regex，只需用yarn添加url-regex或npm安装url-regex，然后像下面这样使用:

const urlRegex = require('url-regex');

const replaced = 'Find me at http://www.example.com and also at http://stackoverflow.com or at google.com'
  .replace(urlRegex({strict: false}), function(url) {
     return '<a href="' + url + '">' + url + '</a>';
  });

tmp。innerText未定义。您应该使用tmp.innerHTML

function strip(html) 
    {  
        var tmp = document.createElement("DIV"); 
        tmp.innerHTML = html; 
        var urlRegex =/(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig;   
        return tmp.innerHTML .replace(urlRegex, function(url) {     
        return '\n' + url 
    })