js 截取字符串 一个中文长度为2
<script> /* //截取字符串 包含中文处理 //(串,长度,增加...) function subString(str, len, hasDot) { var newLength = 0; var newStr = ""; var chineseRegex = /[^\x00-\xff]/g; var singleChar = ""; var strLength = str.replace(chineseRegex,"**").length; for(var i = 0;i < strLength;i++) { singleChar = str.charAt(i).toString(); if(singleChar.match(chineseRegex) != null) { newLength += 2; } else { newLength++; } if(newLength > len) { break; } newStr += singleChar; } if(hasDot && strLength > len) { newStr += "..."; } return newStr; } alert(subString("字2符串截取测试",10)); </script>引自：http://hi.baidu.com/baijunhui/blog/item/be6bff77a304e613b151b962.html
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