//封裝StringBuilder

function StringBuilder() { this._string_ = new Array(); }

StringBuilder.prototype.Append = function (str) { this._string_.push(str); }

StringBuilder.prototype.toString = function () { return this._string_.join(""); }

//trim去掉字符串兩邊的指定字符,默去空格

String.prototype.Trim = function (str) { if (!str) { str = '\\s'; } else { if (str == '\\') { str = '\\\\'; } else if (str == ',' || str == '|' || str == ';') { str = '\\' + str; } else { str = '\\s'; } } eval('var reg=/(^' + str + '+)|(' + str + '+$)/g;'); return this.replace(reg, ''); };

String.prototype.trim = function (str) { return this.Trim(str); };

//判斷一個字符串是否為NULL或者空字符串

String.prototype.isNull = function () { return this == null || this.trim().length == 0; }

String.prototype.equals = function (str) { return this == str; }

//字符串截取后面加入...

String.prototype.interceptString = function (len) {

??? if (this.length > len) {

??????? return this.substring(0, length - 1) + "...";

??? }

??? else {

??????? return this;

??? }

}

//獲得一個字符串的字節數

String.prototype.countLength = function () { var strLength = 0; for (var i = 0; i < this.length; i++) { if (this.charAt(i) > '~') strLength += 2; else strLength += 1; } return strLength; }

//根據指定的字節數截取字符串

String.prototype.cutString = function (cutLength) { if (!cutLength) { cutLength = this.countLength(); } var strLength = 0; var cutStr = ""; if (cutLength > this.countLength()) { cutStr = this; } else { for (var i = 0; i < this.length; i++) { if (this.charAt(i) > '~') { strLength += 2; } else { strLength += 1; } if (strLength >= cutLength) { cutStr = this.substring(0, i + 1); break; } } } return cutStr; };

//關于鏈接的操作命名空間

var Link = {};

//把一個字符串變成鏈接

Link.Filter = function (str) {

??? var urlReg = /http(s)?:\/\/([\w-]+\.)+[\w-]+(\/[\w- .\/?%&=])?[^ <>\[\]*(){}\u4E00-\u9FA5]+/gi;?? //lio 2012-4-25 eidt?? //???????? /^[\u4e00-\u9fa5\w]+$/;\u4E00-\u9FA5

??? return str.replace(urlReg, function (m) { return '<a target="_blank" href="' + m + '">' + m + '</a>'; });

}

?

//驗證一個字符串時候是email

RegExp.isEmail = function (str) {

??? var emailReg = /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)*\.[\w-]+$/i;

??? return emailReg.test(str);

}

//驗證一個字符串是否是URL

RegExp.isUrl = function (str) {

??? var patrn = /^http(s)?:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\:+!]*([^<>])*$/;

??? return patrn.exec(str);

}

//驗證一個字符串是否是電話或傳真

RegExp.isTel = function (str) {

??? var pattern = /^[+]{0,1}(\d){1,3}[ ]?([-]?((\d)|[ ]){1,12})+$/;

??? return pattern.exec(str);

}

//驗證一個字符串是否是手機號碼

RegExp.isMobile = function (str) {

??? var patrn = /^((13[0-9])|(15[0-35-9])|(18[0,2,3,5-9]))\d{8}$/;

??? return patrn.exec(str);

}

//驗證一個字符串是否是漢字

RegExp.isZHCN = function (str) {

??? var p = /^[\u4e00-\u9fa5\w]+$/;

??? return p.exec(str);

}

//驗證一個字符串是否是數字

RegExp.isNum = function (str) {

??? var p = /^\d+$/;

??? return p.exec(str);

}

//驗證一個字符串是否是純英文

RegExp.isEnglish = function (str) {

??? var p = /^[a-zA-Z., ]+$/;

??? return p.exec(str);

}

// 判斷是否為對象類型

RegExp.isObject = function (obj) {

??? return (typeof obj == 'object') && obj.constructor == Object;

}

//驗證字符串是否不包含特殊字符 返回bool

RegExp.isUnSymbols = function (str) {

??? var p = /^[\u4e00-\u9fa5\w \.,()，ê?。?ê（ê?§）ê?]+$/;

??? return p.exec(str);

}

?

//將一個字符串用給定的字符變成數組，

String.prototype.toArray = function (str) {

??? if (this.indexOf(str) != -1) {

??????? return this.split(str);

??? }

??? else {

??????? if (this != '') {

??????????? return [this.toString()];

??????? }

??????? else {

??????????? return [];

??????? }

??? }

};

//根據數據取得再數組中的索引

Array.prototype.getIndex = function (obj) {

??? for (var i = 0; i < this.length; i++) {

??????? if (obj == this[i] || obj.equals(this[i])) {

??????????? return i;

??????? }

??? }

??? return -1;

}

//移除數組中的某元素

Array.prototype.remove = function (obj) {

??? for (var i = 0; i < this.length; i++) {

??????? if (obj.equals(this[i])) {

??????????? this.splice(i, 1);

??????????? break;

??????? }

??? }

??? return this;

};

//判斷元素是否在數組中

Array.prototype.contains = function (obj) {

??? for (var i = 0; i < this.length; i++) {

??????? if (obj == this[i] || obj.equals(this[i])) {

??????????? return true;

??????? }

??? }

??? return false;

};

總結

以上是生活随笔為你收集整理的js一些通用方法的封装的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。