------------------------ JavaScript | ------------------------ # û´í,ÕâÊÇJS,±ØÐë¶ñ²¹ ------------------------ Êý¾ÝÀàÐÍ | ------------------------ Number var a = 10; var b = 1.2; var c = .6; //Æäʵ¾ÍÊÇ0.6 var d = 070; //0¿ªÍ·,×¢Òâ,Êǰ˽øÖÆ var e = 0XFF; //0x¿ªÍ·,×¢ÒâÊÇÊ®Áù½øÖÆ var f = 1/0; //ÕýÎÞÇî var g = window.parseInt("10sdqwdq"); //½á¹ûÊÇ10 var h = window.parseInt("dqwdqwdq"); //½á¹ûÊÇNaN String Boolean Object var date = new Date(); //ÈÕÆÚ¶ÔÏó var arr = new Array(); //Êý×é¶ÔÏó var obj = {name:"KevinBlandy",age:"23"}; # ËùÓÐÏóͨÓ÷½·¨(ÀàËÆJavaÖÐObjectµÄ·½·¨) constructor * ·µ»Ø¶ÔÏóËùÔڵĹ¹ÔìÆ÷ hasOwnProperty * ÅжϸÃÊôÐÔÊÇ·ñÊÇ×Ô¼º±¾ÉíµÄ obj.hasOwnProperty("name"); isPrototypeOf propertyIsEnumerable toLocalString toSource toString valueOf Undefind * ±äÁ¿ÉùÃ÷ÁË,µ«ÊÇûÓб»¸³Öµ,ÆäʵҲµÈͬÓÚ null Null * ±íʾһ¸ö¿Õ¶ÔÏóµÄÒýÓà Function * º¯ÊýÀàÐÍ,ÊÇ Js ÖбȽÏÌØÊâ,ÇÒ¹îÒìµÄÒ»ÖÖÀàÐÍ function fun (){ console.log("fun..."); } ------------------------ ±äÁ¿ | ------------------------ # È«¾Ö * ÉùÃ÷ÔÚ·½·¨Íⲿ * JS²»½¨ÒéʹÓÃÈ«¾Ö±äÁ¿(²éÕÒµÄʱºòЧÂʱȽϵÍ,¶øÇÒÔÚ´óÐͳÌÐòÖÐÒ²Ðí²»°²È«) # ¾Ö²¿ * ÉùÃ÷ÔÚ·½·¨ÄÚ²¿ ------------------------ Êý×é | ------------------------ # Êý×éÒ²ÊÇJSÖеÄÒ»ÖÖ¶ÔÏó,±È½Ï³£ÓõĶÔÏó # ¿ÉÒÔ´æ´¢²»Í¬ÀàÐ͵ÄÊý¾Ý,³¤¶È¿É±ä # ³£Ó÷½·¨ push pop shift unshift splice slice concat join sort reverse # еÄÑ­»·±éÀú var arr = [1,2,3,4,5,6,7,8]; arr.forEach(function(item){ console.log(item); }); # ¹ýÂË var arr = [1,2,3,4,5,6,7,8]; //¹ýÂ˵ôСÓà5µÄÊý×Ö var newArr = arr.filter(function(item){ if(item > 5){ return true; } return false; }); ------------------------ º¯Êý | ------------------------ # º¯Êý±¾ÉíÒ²ÊÇÒ»ÖÖÊý¾ÝÀàÐÍ # ´´½¨º¯ÊýµÄÈýÖÖ·½·¨ function fun (x , y ){ return x + y; }; var fun = function(x ,y){ return x + y; }; * ÒÔÉÏÁ½ÖÖµÄÖ÷ÒªÇø±ð,'JS½âÊ͵Äʱ»ú²»Í¬' * µÚÒ»ÖÖ,JS½âÊÍÆ÷È¥Ö±½Ó¾Í»áÈ¥ÕÒ,ÆäËûµÄ´úÂë,¶¼ÊÇ´ÓÉÏÍùÏÂ˳ÐòÖ´ÐÐ * ͨË×Àí½â:µÚÒ»ÖÖд·¨,²»¹ÜÔÚÄÄÀïµ÷Ó÷½·¨,¶¼¿ÉÒÔÕÒµ½³É¹¦µ÷ÓÃ.µÚ¶þÖÖ.Èç¹ûµ÷ÓÃдÔÚÁ˺¯ÊýÇ°Ãæ,ÄÇô¾Í»áundefind var fun = new Function('x','y','return x + y;'); * µÚÈýÖÖ²»³£Óà # arguments * ÿ¸öº¯ÊýÄÚ²¿¶¼»áÓÐÒ»¸ö arguments ¶ÔÏó * arguments,ÊÇÒ»¸öÊý×é,·â×°Á˺¯ÊýµÄÐβÎÖµ * ·½·¨ var current = aguments.callee(); * ±íʾÒýÓõ±Ç°º¯Êý±¾Éí # this ¹Ø¼ü×Ö * this,ÔÚJSÀïÃæ,×ÜÊÇÖ¸Ïòµ÷ÓÃÕß.Ë­µ÷ÓÃ,this ¾ÍÖ¸ÏòË­ # call,apply µÄʹÓà * ÕâÁ©º¯ÊýÖ÷ÒªÓÃÓڵײã,ÓÃÓڰ󶨺¯ÊýµÄ×÷ÓÃÓò * call var color = "red"; var obj = {color:"yello"}; function showColor(x,y){ alert(this.color); } showColor(); //½á¹ûÊÇred showColor.call(window,5,10);//½á¹ûÊÇred showColor.call(obj,5,10); //½á¹ûÊÇyello * apply * ¸ú callÒ»Ñù,Ö»ÊÇ˵,´«µÝµÄ²ÎÊýÊÇÊý×é showColor(); //½á¹ûÊÇred showColor.call(window,[5,10]); //½á¹ûÊÇred showColor.call(obj,[5,10]); //½á¹ûÊÇyello # ¿é * ÔÚJSÀïÃæÆäʵûÓпéµÄ¸ÅÄî (function(){ alert("Ö´ÐÐ"); })(); # ±Õ°ü * Ö´Ðл·¾³ * ×÷ÓÃÓòÁ´ * À¬»ø»ØÊÕ ------------------------ ÃæÏò¶ÔÏó | ------------------------ # ¶ÔÓڸ߼¶ÓïÑÔ,JAVA,¿Ï¶¨¾«Í¨OOP±à³Ì˼Ïë # Json¶ÔÏóµÄʹÓà var obj = {name:"Kevin",age:23}; obj.sex = "ÄÐ"; //ÐÂÔöÊôÐÔ obj.age = 24; //ÐÞ¸ÄÊôÐÔ delete obj.name; //ɾ³ýÊôÐÔ for(var attr in obj){ //ö¾Ù¶ÔÏóÊôÐÔ console.log(arr + ":" + obj[attr]); } # ÃæÏò¶ÔÏóµÄ¸ÅÄî //¶¨ÒåÒ»¸öÀà var Persion = function(name,age){ this.name = name; this.age = age; //˽ÓÐÊôÐÔ,ÃüÃûÒ»°ãÒÔ _ ¿ªÍ· var _sex = "ÄÐ"; //»ñÈ¡Öµ this.getSex = function(){ return _sex; } //ÉèÖÃÖµ this.setSex = function(sex){ _sex = sex; } } //ʵÀý»¯Ò»¸ö¶ÔÏó var p = new Persion("KevinBlandy",23); p.setSex("ÄÐ"); //ÍØÕ¹Ò»¸öÊôÐÔ Persion.prototype.id = 10; //ÍØÕ¹Ò»¸ö·½·¨ Persion.prototype.method = function(){ alert(this.age); } //¸üΪ¿ì½ÝµÄÊôÐÔ/·½·¨ÍØÕ¹·½Ê½ //µ«ÊÇҪעÒâ,À©Õ¹Ô­ÐͶÔÏóµÄʱºò,Õâ¶Ñ´úÂëÒ»¶¨Òª·ÅÔÚÔ­ÐͶÔÏóÇ°Ãæ Persion.prototype = { //Ô­ÐͶÔÏóµÄ¹¹ÔìÆ÷×ÜÊÇÖ¸Ïòµ±Ç°¶ÔÏóµÄÄ£°æ constructor:Persion, id:10, method:function(){ alert(this.age); } } # µ¥Ìåģʽ var Ext = Ext || {}; * Èç¹ûÕâ¸öEXT´æÔÚ,ÄÇôֱ½Ó¸³Öµ,²»´æÔھ͸³ÖµÎªÒ»¸ö¿Õ¶ÔÏó