jQuery的替換有前綴的話

Question

我想問如何在jQuery中如何替換，只有用$開始，例如一個字：

//$example and $friend here means nothing just a regular string 
var txt = "This is just an $example my $friend"; 

我要替換在開頭字符串的所有字$將在HTML標籤這樣的替換：

This is just an <span class="php-var">$example</span> my <span class="php-var">$friend</span> 

我想這樣做在客戶端，所以我可以救我的服務器性能

Answer 1

象下面這樣：

var txt = "This is just an $example my $friend"; 
var txt = txt.replace(/\$\S+/g, '<span class="php-var">$&</span>');