正则表达式用于替换文本失败

Question

我正在尝试替换以下HTML中的heelo|paul，并将其替换为/heelo to paul/

<p>Dear sir&nbsp;&nbsp; {{heelo|Paul}}&nbsp; ,</p>n<p>I'm just testing please wait</p>n<p>yours faithfully,</p>n<p>&nbsp; 

这是我使用的正则表达式：

str.replace(/.*?{{|}}/g, "/$1 to $2/")

但它会产生错误的结果：

<p>Dear sir&nbsp;&nbsp; /$1 to $2/heelo|Paul/$1 to $2/&nbsp; ,</p>n<p>I'm just testing please wait</p>n<p>yours faithfully,</p>n<p>&nbsp

有什么想法吗？

Answer 1

您忘记了使用 转义|，也忘记将组添加到您想要的匹配项中。试试这个正则表达式：

(.*?{{)(.*?)|(.*?)(?=}})

这是一个有效的Javascript：

var myString = "<p>Dear sir&nbsp;&nbsp; {{heelo|Paul}}&nbsp; ,</p>n<p>I'm just testing please wait</p>n<p>yours faithfully,</p>n<p>&nbsp;";
document.write(myString.replace(/(.*?{{)(.*?)|(.*?)(?=}})/g, "$1/$2 to $3/"));

Answer 2

我认为这就是你要找的...

var p = document.getElementById('greetings');
p.innerText = p.innerText.replace(/.*?{{([ws]+)|([ws]+)}}/, "/$1 to $2/");

<p id="greetings">Dear sir&nbsp;&nbsp; {{heelo|Paul}}&nbsp; ,</p>n<p>I'm just testing please wait</p>n<p>yours faithfully,</p>n<p>&nbsp;