正则表达式中文匹配

// 用正则匹配中文

var arr2 = ["匹","配","中","文"]; var pattern1 = /[\u4e00-\u9fa5]+/g; for (var i = 0; i < arr2.length; i++) { if (pattern1.test(arr2[i])) { console.log(arr2[i]); // 匹，中 } } 

上面的代码为何只输出了 匹、中？

答案：

正则最后的g去掉

<script type="text/javascript"> var arr2 = ["匹","配","中","文"]; var pattern1 = /[\u4e00-\u9fa5]+/; for (var i = 0; i < arr2.length; i++) { if (pattern1.test(arr2[i])) { console.log(arr2[i]); // 匹，中 } } </script>