架构师之正则表达式(6)-实现字符串按照字数换行(即字符串插入操作)

架构师之正则表达式(六)-------实现字符串按照字数换行(即字符串插入操作)
1.前言.
  如题.
2.代码.
  

<script type="text/javascript">
var name="jjjjjjjjjjjjjjjjjjjjddddddddddddddddddddkkkkkkkkkkkkkkkkkk";
name=name.replace(/([A-z]{20})/g,"$1\n");
alert(name);
</script>