用Javascript/jQuery中的正则表达式替换模式的所有实例 [英] Replace all instances of a pattern with regular expressions in Javascript / jQuery

问题描述

首先，我对正则表达式不太了解，需要购买一本书，因为这对我来说很难买到.

First off I don't know much about regex and need to buy a book because it's has proven to me to be difficult to pickup.

最终，我想使用一个dom元素，并在直括号"["和]"中替换文本，并在文本周围插入一个链接，并且字符串中可能有多个括号集.

Ultimately I want to take a dom element, and replace text within straight brackets "[" and "]" and insert a link around the text, and there may be multiple bracket sets in the string.

function changeTip() {  
        var link = '<a href="' + $('#txtURL').attr('value') + '" target="_blank">';
        $('.tipoftheweektip').html($('#txtTip').attr("value").replace('[', link).replace(']', '</a>'));
    }

这有效，除了:

• 不使用第二组括号
• 如果没有右括号，它将删除右括号之前的所有文本

我看过示例，并且由于正则表达式代码中使用了方括号，因此我无法弄清楚如何查找和替换方括号.

I've looked at examples and because straight brackets are used in the regex code, I cant figure out how to look for a bracket and replace it.

有人在做类似的事情，他们可以分享吗?预先感谢.

Anyone out there that has done something similar that they can share? Thanks in advance.

推荐答案

.replace(/\[([^\]]*)\]/g, link + "$1</a>")

的意思是，在[和]之间找到文本，并将其替换为link的值，文本本身和''.这样可以确保匹配的方括号. "g"表示多次(全局)执行".

which means, find text between [ and ] and replace it with the value of link, the text itself and ''. This ensures matching square brackets. The 'g' means 'do it multiple times (globally)'.

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