Manipulating string with html tags using regex

Question

我有字符串test1 test2 tes<span style="color:red;">t3</span> span test4 ，我想将span标签放在</span>之后的span单词周围，而又不触及现有的span标签使用javascript正则表达式。

Answer 1

REgex:

(<\/span> )(span)

REplacement string:

$1<span>$2</span>

DEMO

> 'test1 test2 tes<span style="color:red;">t3</span> span test4'.replace(/(<\/span> )(span)/g, "$1<span>$2</span>")
'test1 test2 tes<span style="color:red;">t3</span> <span>span</span> test4'