it-怎麼為正則表達式匹配的字符串加上span包裹起來？

怎麼為正則表達式匹配的字符串加上span包裹起來？

var re=/world|people|Pizar/g
var str = "Disney films are favored by people all around the world, it is known to all that many of the movies are produced by Pizar animation studio";

有一個正則表達式，還有一個字符串，我想為這個字符串中所有匹配正則表達式的單詞分別都加上一個< span >包裹起來，例如：< span >world< /span >一樣。請問怎麼才能辦到呢？

最佳回答：

 var re=/(world|people|Pizar)/g
var str = "Disney films are favored by people all around the world, it is known to all that many of the movies are produced by Pizar animation studio";
str=str.replace(re,'<span>$1</span>')
alert(str)