自定义JavaScript字符串截取函数:
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; }