首页 / 脚本样式 / JavaScript / js关于字符长度限制的问题示例探讨

复制代码 代码如下:
var fun = function（str）{
var preg = new RegExp（"[u4e00-u9fa5]+","gi"）;
var preg2 = new RegExp（"[^u4e00-u9fa5]","gi"）;
var count = 0;
for（var i=0;i<str.length;i++）{
if（preg.test（str[i]））{
count = count+2;
}else{
count = count+1;
}
}
return count;
}