jsUtils

//替换所有字符
String.prototype.replaceAll = function(reallyDo, replaceWith, ignoreCase) {  
	if (!RegExp.prototype.isPrototypeOf(reallyDo)) {  
	return this.replace(new RegExp(reallyDo, (ignoreCase ? "gi": "g")), replaceWith);  
	} else {  
	return this.replace(reallyDo, replaceWith);  
	}  
	} 
//存在重复元素
Array.prototype.iterate = function () {     
	var flag = false;     
	for (var i = 0, len = this.length; i < len; i++) {     
	for (var j = 0; j < len; j++) {     
	if (this[i] == this[j] && i != j) {     
	flag = true;     
	break;     
	}     
	}     
	}     
	return flag;     
};     

1.去掉数组中重复的值
 
Array.prototype.unique = function() {
	var data = [];
    var a = {}; //声明一个对象，javascript的对象可以当哈希表用
    for (var i = 0; i < this.length; i++) {
		if(!a[this[i]]){
			a[this[i]] = true;
			data[data.length] = this[i];
		}
    }
    return data;
};
var a = new Array("5","7","7");
alert(a);
alert(a.unique());
 
2.把字符串的首字母转化为大写
 
String.prototype.initialsToUpper = function() {
	return this.substring(0,1).toUpperCase().concat(this.substring(1));
};
 
3.判断一个字符串中是否包含某字符
String.prototype.contains = function(str) {
	return this.indexOf(str) > -1 ? true : false;
};
 
4.去掉字符串的空格
String.prototype.trim = function() {
	return this.replace(/(^/s*)|(/s*$)/g, "");
};
   
String.prototype.lTrim = function() {
	return this.replace(/(^/s*)/g, "");
};
   
String.prototype.rTrim = function() { 
	return this.replace(/(/s*$)/g, "");
};
 
5.操作表单元素的几个js方法
//删除下拉框选项
function removeAllOptions(obj) {
	for (var k = obj.length - 1; k > 0; k--) {
		obj.remove(k);
	}
}
//添加下拉框选项
//其中data是action传过来的TreeMap值
function appendAllOptions(obj, data) {
	removeAllOptions(obj);
//	data = data.substr(1, data.length - 2);
	var arg = data.split(",");
	for (var i = 0; i < arg.length; i++) {
		var val = arg[i].split("=");
		obj.add(new Option(val[1], val[0]));
	}
}
//通过已选中checkbox的id获取当前行第n列的值，并组合成字符串返回
function getTDText(chkId, n) {
	var temp = "";
	var ids = chkId.split(",");
	for (var i = 0; i < ids.length; i++) {
		var tr = $(ids[i]).parentElement.parentElement;
		if (temp == "") {
			temp = tr.cells[n].innerText.trim();
		} else {
			temp += "," + tr.cells[n].innerText.trim();
		}
	}
	return temp;
}
//获取一组radio选中项的值
function getRadioValue(name) {
    var obj = document.getElementsByName(name);
    if (obj != null) {
        for(i = 0; i < obj.length; i++) {
            if (obj[i].checked) {
                return obj[i].value;            
            }
        }
    }
    return null;
}
//全选或取消全选
function chkAll(ele) {
	var objArray = document.getElementsByName("chk");
	for (var i = 0; i < objArray.length; i++) {
		objArray[i].checked = ele.checked;
	}
}
//获取选中的ID
function getChkVal() {
	var ids = "";
	var objArray = document.getElementsByName("chk");
	for (var i = 0; i < objArray.length; i++) {
		if (objArray[i].checked) {
			if (ids == "") {
				ids = objArray[i].id;
			} else {
				ids += "," + objArray[i].id;
			}
		}
	}
	return ids;
}
 
6.几个验证的js方法
//验证是否为合法的手机号码
String.prototype.isMobile = function() { 
	return /^(?:13/d|15[89])-?/d{5}(/d{3}|/*{3})$/.test(this.trim()); 
};
//验证是否为合法的电话号码或传真
String.prototype.isPhone = function() { 
	return /^(([0/+]/d{2,3}-)?(0/d{2,3})-)(/d{7,8})(-(/d{3,}))?$/.test(this.trim()); 
};
//验证是否为合法的Email
String.prototype.isEmail = function() {
	return /^[a-zA-Z0-9_/-]{1,}@[a-zA-Z0-9_/-]{1,}/.[a-zA-Z0-9_/-.]{1,}$/.test(this.trim());
};
//验证是否为合法的邮编
String.prototype.isPost = function() {
	return /^/d{6}$/.test(this.trim());
};
//验证是否为合法的网址
String.prototype.isUrl = function() {
	var strRegex = "^((https|http|ftp|rtsp|mms)://)"  
	+ "(([0-9a-z_!~*’().&=+$%-]+: )?[0-9a-z_!~*’().&=+$%-]+@)?" //验证ftp的user@  
	+ "(([0-9]{1,3}/.){3}[0-9]{1,3}" // 验证IP形式的URL  
	+ "|" // 允许IP和DOMAIN（域名）  
	+ "([0-9a-z_!~*’()-]+/.)*" // 域名- www.  
	+ "([0-9a-z][0-9a-z-]{0,61})?[0-9a-z]/." // 二级域名  
	+ "[a-z]{2,6})" // 一级域名  
	+ "(:[0-9]{1,4})?" // 端口 	  
	var re = new RegExp(strRegex);  
	return re.test(this.trim());
};

//传入一个回调，根据回调函数条件过滤数组     
        Array.prototype.filter = function(callback) {     
            var rs = [];         
            for ( var i = 0, length = this.length; i < length; i++ ) {     
                if (callback(this[i], i)) {     
                    rs.push(this[i]);     
                }     
            }     
            return rs;     
        };     

//找到返回所在索引，不存在返回-1     
Array.prototype.index = function (el) {     
    var i = 0;     
    for (var i = 0, len = this.length; i < len; i++) {     
	if (el == this[i]) {     
	    return i;     
	}     
    }     
    return -1;       
};