http://blog.sina.com.cn/s/blog_944b24ef0101epr5.html
一、给jQuery对象添加自定义方法
方法一、$.fn. xxx
方法二、jQuery.fn.extend({
xxx:function(){
alert($(this).val());
}
});
方法一示例：
$.fn.setCursorPosition = function(position){ if(this.lengh == 0) return this; return $(this).setSelection(position, position); } $.fn.setSelection = function(selectionStart, selectionEnd) { if(this.lengh == 0) return this; input = this[0]; if (input.createTextRange) { var range = input.createTextRange(); range.collapse(true); range.moveEnd('character', selectionEnd); range.moveStart('character', selectionStart); range.select(); } else if (input.setSelectionRange) { input.focus(); input.setSelectionRange(selectionStart, selectionEnd); } return this; } $.fn.focusEnd = function(){ this.setCursorPosition(this.val().length); }
方法二示例：
$.fn.extend({ setCursorPosition:function(position){ if(this.lengh == 0) return this; return $(this).setSelection(position, position); }, setSelection:function(selectionStart, selectionEnd) { if(this.lengh == 0) return this; input = this[0]; if (input.createTextRange) { var range = input.createTextRange(); range.collapse(true); range.moveEnd('character', selectionEnd); range.moveStart('character', selectionStart); range.select(); } else if (input.setSelectionRange) { input.focus(); input.setSelectionRange(selectionStart, selectionEnd); } return this; }, focusEnd:function(){ this.setCursorPosition(this.val().length); } });
以上定义都可如此调用：
$('.num').click(function(){ $('.num').focusEnd(); });
二、扩展jQuery类本身 为类添加新的方法
方法一、jQuery.extend(object);
方法二、jQuery. xxx=function(){};
方法一示例：
$.extend({ add:function(a,b){return a+b;}, a:'2 chi gege ' }); alert($.add(3,4)); //7 alert($.a); //2 chi gege
方法二示例：
$.add2 = function(a,b){ return a-b; } alert($.add2(4,3)); //1
参考代码： $.hx = {};$.hx.data = { isEmpty: function (value) { var item = $.trim(value); return item.length === 0; }, isNumber: function (value) { return !isNaN(item); }};
$.hx.regex = {
expression: { email: /^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/, //e.g. admin@pailv.com password: /^(?![0-9]+$)(?![a-zA-Z]+$)[0-9A-Za-z]{7,20}$/,//e.g. admin888 cabin: /^[a-zA-Z]{1}$/, cabins: /^([a-zA-Z]{1}\/){1,30}$/, airline: /^(([A-Za-z]{2})|([A-Za-z]\d)|(\d[A-Za-z])){1}$/, mainAirportCode: /^([a-zA-Z]{3}\/){1,10}$/,//e.g. pvg/PVG/pVg/ airportCode: /^([a-zA-Z]{3}\/){1,300}$/,//e.g. pvg/PVG/pVg/ 最大改成了300个机场，原先的一些最大数在控件中使用maxlength做了限制 update by wss on20150511 unsignedInteger: /^\d+$/, integer: /^(-){0,1}\d+$/, flightNo: /^((\d{1,4}-\d{1,4}\/)|(\d{1,4}\/)){0,10}$/, //e.g. 1/2/6666-8888/9000-9999/ date: /^(?:(?!0000)[0-9]{4}-(?:(?:0[1-9]|1[0-2])-(?:0[1-9]|1[0-9]|2[0-8])|(?:0[13-9]|1[0-2])-(?:29|30)|(?:0[13578]|1[02])-31)|(?:[0-9]{2}(?:0[48]|[2468][048]|[13579][26])|(?:0[48]|[2468][048]|[13579][26])00)-02-29)$/, currencyCode: /^[a-zA-Z]{3}$/, double: /^(-)?\d+(\.\d+)?$/, decimal: /^((\d|[1-9]\d+)(\.\d{1,2}){0,1}){1}$/, cityCode: /^[A-Za-z]{3}(\/{1}[A-Za-z]{3}){0,}?$/, invoiceAirline: /^[0-9A-Za-z]{2}(\/[0-9A-Za-z]{2}){0,}?$/, CabinLevel: /^[A-Za-z]{1}(\/[A-Za-z]{1}){0,}?$/, Airport: /^[a-zA-Z]{3}$/, airlines: /^((([A-Za-z]{2})|([A-Za-z]\d)|(\d[A-Za-z]))\/){1,100}$/},
matchReg: function (source, reg) { source.match(reg); }, matchEmail: function (source) { return source.match(this.expression.email); }, matchPassword: function (source) { return source.match(this.expression.password); }, matchCabin: function (source) { return source.match(this.expression.cabin); }, matchCabins: function (source, autoAppend) { var result = source; if (autoAppend && result.lastIndexOf("/") != result.length - 1) { result = result + "/"; } return result.match(this.expression.cabins); }, matchAirline: function (source) { return source.match(this.expression.airline); }, matchMainAirportCode: function (source, autoAppend) { var result = source; if (autoAppend && result.lastIndexOf("/") != result.length - 1) { result = result + "/"; } return result.match(this.expression.mainAirportCode); }, matchAirportCode: function (source, autoAppend) { var result = source; if (autoAppend && result.lastIndexOf("/") != result.length - 1) { result = result + "/"; } return result.match(this.expression.airportCode); }, matchUnsignedInteger: function (source) { return source.match(this.expression.unsignedInteger); }, matchFlightNo: function (source, autoAppend) { var result = source; if (autoAppend && result.lastIndexOf("/") != result.length - 1) { result = result + "/"; } return result.match(this.expression.flightNo); }, matchDate: function (source) { return source.match(this.expression.date); }, matchInteger: function (source) { return source.match(this.expression.integer); }, matchIntegerRange: function (source, min, max) { if (!source.match(this.expression.integer)) { return false; } if (Number(source) < min || Number(source) > max) { return false; } return true; }, matchCurrencyCode: function (source) { return source.match(this.expression.currencyCode); }, matchDouble: function (source) { return source.match(this.expression.double); }, matchDecimal: function (source) { return source.match(this.expression.decimal); }, matchCityCode: function (source) { return source.match(this.expression.cityCode); }, matchInvoiceAirline: function (source) { return source.match(this.expression.invoiceAirline); }, matchCabinLevel: function (source) { return source.match(this.expression.CabinLevel); }, matchAirport: function (source) { return source.match(this.expression.Airport); }, matchAirlines: function (source) { var result = source; if (result.lastIndexOf("/") != result.length - 1) { result = result + "/"; } return result.match(this.expression.airlines); }};$.hx.style = {
addError: function (o) { o.addClass("error"); o.focus(); }, removeError: function (o) { o.removeClass("error"); }, addSubmitting: function (o) {}
}; $.hx.compare = { date: function (start, end) { var startTime = new Date(start.replace(/-/gi, "/")); var endTime = new Date(end.replace(/-/gi, "/")); if (endTime < startTime) { return false; } return true; }};