JavaScript 字符串处理函数
2010-09-14 13:35:06 来源:WEB开发网//截取字符串 包含中文处理
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;
}
//字符串连接
function StringBuffer() {
this._string = new Array;
}
StringBuffer.prototype.append = function(str) {
return this._string.push(str);
}
StringBuffer.prototype.toString = function() {
return this._string.join("");
}
Tags:JavaScript 字符串 处理
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