JS中应用正则表达式转换大小写,代码很简单,看代码:
以下首字母大写,其它字母小写
- <script type="text/javascript">
- function replaceReg(reg,str){
- str = str.toLowerCase();
- return str.replace(reg,function(m){return m.toUpperCase()})
- }
- var reg = /(w)|s(w)/g;
- var str = 'share javascript';
- var str2 = 'SHARE JAVASCRIPT';
- var str3 = 'Test str is no good!';
- var str4 = 'final test';
- document.write(replaceReg(reg,str)+'<br />');
- document.write(replaceReg(reg,str2)+'<br />');
- document.write(replaceReg(reg,str3)+'<br />');
- document.write(replaceReg(reg,str4)+'<br />');
- </script>
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以下只首字母大写,其它字母大小写不作处理
- <script language="JavaScript">
- <!--
- var str="xi nAn shi you xUe yuan china people"
- alert(str.replace(/s[a-z]/g,function($1){return $1.toLocaleUpperCase()}).replace(/^[a-
- z]/,function($1){return $1.toLocaleUpperCase()}))
- //-->
- </script>
运行代码,直接看效果就可以了!