
有很多时候,js不能像c#一样有那样多的方法操作,但是我们可以自己写一些方法,让他拥有:
比如最常见的一些:
注意:js里的注释最好用/**/,便于压缩
- /*isNumber*/
- /*功能:是否是数字*/
- String.prototype.isNumber = function () {
- return !isNaN(parseFloat(this)) && isFinite(this);
- }
- /*format*/
- /*功能:你懂的*/
- String.prototype.format = function () {
- if (arguments.length == 0) return this;
- for (var s = this, i = 0; i < arguments.length; i++)
- s = s.replace(new RegExp("\\{" + i + "\\}", "g"), arguments[i]);
- return s;
- };
- /*功能:去空格*/
- String.prototype.trim = function () {
- return this.replace(/(^\s*)|(\s*$)/g, "");
- }
- /*获取路径参数*/
- JSON.parseQueryString = function (url) {
- var reg_url = /^[^\?]+\?([\w\W]+)$/,
- reg_para = /([^&=]+)=([\w\W]*?)(&|$|#)/g,
- arr_url = reg_url.exec(url),
- ret = {};
- if (arr_url && arr_url[1]) {
- var str_para = arr_url[1], result;
- while ((result = reg_para.exec(str_para)) != null) {
-
- ret[result[1]] = result[2];
- }
- }
- return ret;
- };
- /*格式化金钱格式*/
- Number.prototype.formatMoney = function (places, symbol, thousand, decimal) {
- places = !isNaN(places = Math.abs(places)) ? places : 2;
- symbol = symbol !== undefined ? symbol : "¥";
- thousand = thousand || ",";
- decimal = decimal || ".";
- var number = this,
- negative = number < 0 ? "-" : "",
- i = parseInt(number = Math.abs(+number || 0).toFixed(places), 10) + "",
- j = (j = i.length) > 3 ? j % 3 : 0;
- return symbol + negative + (j ? i.substr(0, j) + thousand : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + thousand) + (places ? decimal + Math.abs(number - i).toFixed(places).slice(2) : "");
- };
- /*删除下标数组*/
- Array.prototype.remove = function (dx) {
- if (isNaN(dx) || dx > this.length) { return false; }
- for (var i = 0, n = 0; i < this.length; i++) {
- if (this[i] != this[dx]) {
- this[n++] = this[i]
- }
- }
- this.length -= 1
- };
- /*无视大小写取值json对应值*/
- var getKeyValue = function (obj, key, ignore) {
- if (typeof (obj) != "object" || key==undefined) return;
- if (ignore == undefined) ignore = true;
-
- var _res = null;
- $.each(obj, function (k, v) {
- if (k != undefined && k != null&& k.toString().toLowerCase() == key.toLowerCase()) _res = v;
- });
- return _res;
- };
- //数组制定排序
- Array.prototype.OrderByAsc = function (func) {
- var m = {};
- for (var i = 0; i < this.length; i++) {
- for (var k = 0; k < this.length; k++) {
- if (func(this[i]) < func(this[k])) {
- m = this[k];
- this[k] = this[i];
- this[i] = m;
- }
- }
- }
- return this;
- }
- Array.prototype.OrderByDesc = function (func) {
- var m = {};
- for (var i = 0; i < this.length; i++) {
- for (var k = 0; k < this.length; k++) {
- if (func(this[i]) > func(this[k])) {
- m = this[k];
- this[k] = this[i];
- this[i] = m;
- }
- }
- }
- return this;
- }
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