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zhouweideshijie:
为什么在join的时候需要(select distinct t ...
mysql的exists与inner join 和 not exists与 left join 性能差别惊人 -
openxtiger:
太强了,一点都看不懂
看看谁聪明,类游戏寻找算法 -
metaphy:
无解. 定义n(A)为从A点发出的射线数, 若有解,则n(0, ...
看看谁聪明,类游戏寻找算法 -
ddccjjwwjj:
都不可以用 extjs5 具体用法怎么写
extjs 实现图片HTML5图片上传 -
openxtiger:
可以呀,但你做成连接池的时候,连接关闭时,只是还回给连接池,实 ...
mysql 必要的配置
第二版本:
1.添加了 jimport 类似实现java的import关键字
2.jclass的改进:
- 单个参数为返回查找的类,
- 第一个参数为""时,产生匿名函数。
- 从第三个参数到倒数第二个参数为mixin,且所有的mixin将按照顺序传入类定义的闭包函数的第二个参数到最后一个参数。
附上代码:
var Js5 = {version:"5.0.0"}; var __cpackage__; var __classes__ = {}; var __iclasses__ = {}; var __imports__ = []; Js5.apply = function(o, c) { if (o && c && typeof c == 'object') { for (var p in c) { o[p] = c[p]; } } return o; }; (function() { Js5.apply(Js5, { applyIf : function(o, c) { if (o) { for (var p in c) { if (!Js5.isDefined(o[p])) { o[p] = c[p]; } } } return o; }, extend : function() { var oc = Object.prototype.constructor; return function(sb, sp, overrides) { var coverrides = overrides; if (!overrides) { coverrides = sp; sp = sb; } var F = function() { },sbp,spp = sp.prototype; F.prototype = spp; coverrides = coverrides(spp) || {}; if (!overrides) { sb = coverrides.constructor != oc ? coverrides.constructor : function() { sp.apply(this, arguments); }; } sbp = sb.prototype = new F(); sbp.constructor = sb; sb.superclass = spp; if (spp.constructor == oc) { spp.constructor = sp; } sbp.superclass = (function() { return spp; }); Js5.override(sb, coverrides); // extend coverrides return sb; } }(), mixin:function() { var oc = Object.prototype.constructor; return function(mixins, sb, sp, overrides) { if (!Js5.isArray(mixins)) { mixins = [mixins]; } var coverrides = overrides; if (!overrides) { coverrides = sp; sp = sb; } var F = function() { },sbp,spp = sp.prototype; F.prototype = spp; mixins.unshift(spp); coverrides = coverrides.apply(this, mixins) || {}; if (!overrides) { sb = coverrides.constructor != oc ? coverrides.constructor : function() { sp.apply(this, arguments); }; } sbp = sb.prototype = new F(); sbp.constructor = sb; sb.superclass = spp; if (spp.constructor == oc) { spp.constructor = sp; } sbp.superclass = (function() { return spp; }); Js5.override(sb, coverrides); // extend coverrides mixins.shift(); Js5.each(mixins, function(mixin) { Js5.applyIf(sbp, mixin); }); return sb; } }(), override: function(origclass, overrides) { if (overrides) { var p = origclass.prototype; Js5.apply(p, overrides); } }, /*override : function(origclass, overrides) { if (overrides) { var p = origclass.prototype; overrides = overrides(p.superclass); Js5.apply(p, overrides); if (Js5.isIE && overrides.hasOwnProperty('toString')) { p.toString = overrides.toString; } } },*/ isString : function(v) { return typeof v === 'string'; }, isBoolean : function(v) { return typeof v === 'boolean'; }, isElement : function(v) { return !!v && v.tagName; }, isDefined : function(v) { return typeof v !== 'undefined'; }, isObject : function(v) { return !!v && Object.prototype.toString.call(v) === '[object Object]'; }, isDate : function(v) { return toString.apply(v) === '[object Date]'; }, isPrimitive : function(v) { return Js5.isString(v) || Js5.isNumber(v) || Js5.isBoolean(v); }, isNumber : function(v) { return typeof v === 'number' && isFinite(v); }, isEmpty : function(v, allowBlank) { return v === null || v === undefined || ((Js5.isArray(v) && !v.length)) || (!allowBlank ? v === '' : false); }, isArray : function(v) { return toString.apply(v) === '[object Array]'; }, isIterable : function(v) { //check for array or arguments if (Js5.isArray(v) || v.callee) { return true; } //check for node list type if (/NodeList|HTMLCollection/.test(toString.call(v))) { return true; } //NodeList has an item and length property //IXMLDOMNodeList has nextNode method, needs to be checked first. return ((typeof v.nextNode != 'undefined' || v.item) && Js5.isNumber(v.length)); }, each : function(array, fn, scope) { if (Js5.isEmpty(array, true)) { return []; } if (!Js5.isIterable(array) || Js5.isPrimitive(array)) { array = [array]; } for (var i = 0, len = array.length; i < len; i++) { if (fn.call(scope || array[i], array[i], i, array) === false) { return i; } } return []; }, namespace : function() { var o, d; Js5.each(arguments, function(v) { d = v.split("."); o = window[d[0]] = window[d[0]] || {}; Js5.each(d.slice(1), function(v2) { o = o[v2] = o[v2] || {}; }); }); return o; }, nameclass:function(c) { if (__classes__[c]) return __classes__[c]; var d = c.split("."); var o = window[d[0]] = window[d[0]] || {}; Js5.each(d.slice(1, d.length - 1), function(v2) { o = o[v2] = o[v2] || {}; }); return __classes__[c] = o[d[d.length - 1]]; }, importclass:function(c) { if (__classes__[c]) return __classes__[c]; if (__iclasses__[c]) return __iclasses__[c]; var d = c.split("."); var o = window[d[0]] = window[d[0]] || {}; var name = d[d.length - 1]; Js5.each(d.slice(1, d.length - 1), function(v2) { o = o[v2] = o[v2] || {}; }); if (o[name]) { o = __classes__[c] = o[name]; } else { Js5.each(__imports__, function(i) { if ((o = i[name])) { return false; } }); __iclasses__[c] = o; } return o; } }); Js5.ns = Js5.namespace; })(); /** * p1:String ==>package name * p2..p-1,Object ==>imports * p-1,function ==> package body */ function jpackage() { var l = arguments.length,i = 0; if (l == 0) return; var pkf = arguments[l - 1]; if (Js5.isString(arguments[0])) { __cpackage__ = Js5.namespace(arguments[0]); i = 1; } else { __cpackage__ = window; i = 0; } var args = [],vs,ip; Js5.each(Array.prototype.slice.call(arguments, i, l - 1), function(v) { if (Js5.isString(v)) { vs = v.split(";"); Js5.each(vs, function(v2) { if (v2.substr(-2) == ".*") { ip = Js5.namespace(v2.substring(0, v2.length - 2)); __imports__.push(ip); args.push(ip); } else { args.push(Js5.importclass(v2)); } }); } else if (Js5.isArray(v)) { args = args.concat(v); } else { args.push(v); } }); pkf.apply(__cpackage__, args); __cpackage__ = null; __imports__ = []; __iclasses__ = {}; } function jimport() { var args = [],vs,ip; __imports__ = []; __iclasses__ = {}; Js5.each(arguments, function(v) { if (Js5.isString(v)) { vs = v.split(";"); Js5.each(vs, function(v2) { if (v2.substr(-2) == ".*") { ip = Js5.namespace(v2.substring(0, v2.length - 2)); __imports__.push(ip); args.push(ip); } else { args.push(Js5.importclass(v2)); } }); } else if (Js5.isArray(v)) { args = args.concat(v); } else { args.push(v); } }); return args; } /** * p1:String ==>class name * p2,String ==>same package;Object * p3,function ==> */ function jclass() { var l = arguments.length,i = 0; if (l == 0) { throw new Error("[jclass] invalid arguments"); } if (l == 1) { return Js5.importclass(arguments[0]); } var clf = arguments[l - 1]; var c; if (Js5.isString(arguments[0])) { c = __cpackage__; } else { c = window; } var p; if (l >= 3) { var name = arguments[1]; if (Js5.isString(name)) { p = __cpackage__[name]; if (!p) { p = Js5.importclass(name); } } else { p = arguments[1]; } } else { p = Object; } if (!p) { throw new Error("[jclass] unrecognized parent class"); } var mixins = []; if (l >= 4) { var vs; var mc; Js5.each(Array.prototype.slice.call(arguments, 2, l - 1), function(v) { if (Js5.isString(v)) { vs = v.split(","); Js5.each(vs, function(v2) { mc = Js5.importclass(v2); if (mc) { mixins.push(mc.prototype); } }); } else { mixins.push(v.prototype); } }); } var cls = Js5.mixin(mixins, p, clf); if (arguments[0]) { c[arguments[0]] = cls; } return cls; } function jnew() { var l = arguments.length,i = 0; if (l == 0) return {}; var args = Array.prototype.slice.call(arguments, 1); var name = arguments[0]; var cls; if (Js5.isString(name)) { if (__cpackage__ && __cpackage__[name]) { cls = __cpackage__[name]; } if (!cls) { cls = Js5.importclass(name); } if (!cls) { throw new Error("[jnew] unrecognized class"); } } else { cls = name; } /*var temp = function() { }; var constructor = cls.prototype.constructor; var instanceCls = function() { return constructor.apply(this, args); }; temp.prototype = cls.prototype; instanceCls.prototype = new temp(); instanceCls.prototype.constructor = instanceCls; return new instanceCls();*/ var obj = {}; Js5.override(obj, cls); obj.__proto__ = cls.prototype; cls.apply(obj, args); return obj; }
例子:
var jui = {}; jpackage("jui", function() { jclass("Component", function() { return { constructor:function(x) { console.log("Component:" + x); }, show:function() { console.log("Component"); } } }); jclass("Container", "Component", function(_supr) { return { constructor:function(x) { console.log("Container:" + x); _supr.constructor.call(this, x); } }; }); }); jpackage("jui", function() { jclass("Window", "Container", function(_supr) { return { show:function() { console.log("Window"); } } }); }); jpackage("jui.form", function() { jimport("jui.*"); jclass("TextField", "Component", function(_supr) { return { show:function() { console.log("TextField"); } } }); }); jpackage("js5.util", function() { jclass("Observable", function(_supr) { return { constructor:function() { console.log("Observable.constructor"); }, on:function() { console.log("Observable.on"); }, show:function() { console.log("Observable.show"); } } }); }); jpackage("jui.ex", jimport("jui.Window;jui.*;jui.form.*"), function(_W, j) { jclass("Window", "jui.Window", "js5.util.Observable", function(_supr, _ob) { return { constructor:function(x) { console.log("jui.ex.Window.constructor"); _supr.constructor.call(this, x); _ob.constructor.call(this); }, show:function() { console.log("Window Ex"); _supr.show(); } } }); var MyWindow = jclass("", "jui.Window", function() { return { show:function() { console.log("anonymous myWindow"); } } }); var x = jnew("Window", "package jui.ex.Window"); x.show(); x.on(); x = new MyWindow(); x.show(); jclass("jui.Window").superclass.constructor.call(this, "111111111111") x = jnew(jui.Window, "jui.Window : new in package, use complete class path"); x.show(); x = new jui.Window("jui.Window : new in package, use complete class path"); x.show(); x = jnew("jui.Window", "jui.Window: new in package, use complete class path"); x.show(); x = new j["Window"]("jui.Window: new in package, use import jui.*"); x.show(); x = new _W("jui.Window: new in package, use import jui.Window"); x.show(); for (var i = 1; i <= 5; i++) { x = jnew("TextField", "jui.form.TextField new in package,use import jui.form.*"); x.show(); } }); var x = jnew("jui.ex.Window", "global jui.ex.Window"); x.show();
发表评论
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J框架发布 http://openxtiger.github.io/j/
2013-06-22 23:14 930J框架发布了,模拟了Java的语法,让Javascript面 ... -
extjs TabPanel 多行标题
2013-04-09 22:51 1656extjs TabPanel 的标题只能单行,如果设置ena ... -
j语言----like Java v2
2012-11-20 15:03 924这个无比像Java语言: 'package jui' ... -
Javascript写的Java --- j语言
2012-11-18 10:41 2248这次真的把java的语法写成javascript了,看起来太熟 ... -
[原创]类似Java语法的Javascript框架js5,实现jpackage,jimport,jextends,jclass,jnew
2012-10-30 10:40 1366终于到java的关键字package,import,exten ... -
[原创]类似Java语法的Javascript框架js5
2012-10-28 12:14 2135最近闲来无事,写一个类似Java的语法的Javascript框 ... -
[原创]javascript 天才的设计者 (持续更新)
2012-08-14 15:03 961Javascript对象创建过程: ... -
Javascript的replace的妙用
2012-07-31 09:39 953格式为: str.replace(substr_or_reg ... -
insertAdjacentHTML的应用
2012-07-29 23:41 1028insertAdjacentHTML方法:在指定的地方插 ... -
采有闭包、原型链实现Js的真正继承和封装
2012-07-29 10:40 4476Javascript对象创建过 ...
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