1、原生JavaScript实现字符串长度截取
代码如下:function cutstr(str, len) { var temp; var icount = 0; var patrn = /[^\x00-\xff]/; var strre = “”; for (var i = 0; i < str.length; i++) { if (icount < len – 1) { temp = str.substr(i, 1); if (patrn.exec(temp) == null) {
