《cocos2d-js教学课件》javascript-quicksta

1、,Javascript quickstart,Jianyun bao, Senior Technical Evangelist, Chukong,The technology of mobile game development,What is javascript,What is javascript,What is javascript,WhY is javascript,Functional Programming,http:/www.cse.chalmers.se/rjmh/Papers/whyfp.pdf,WhY is javascript,Fullstack javascript

2、framework for web application development,WhY is javascript,http:/brendaneich.github.io/ModernWeb.tw-2015/,Data type and variables,Definition,Explicit use var for assignment,Implicit direct assignment,Data type and variables,Type conversion,Data type and variables,Type conversion,non number string N

3、aN,Data type and variables,variables,basic data type,compound types,definition function functionName(param, ) ,call functionName(param, );,typeof check data type,compound types,operator,5 = “5” is true (Automatic type conversion),null = undefined is true,null = undefined is false,finally return the

4、rightest value,finally a s value is 13,operator,instance of some data type,refer to typeof,operator,statement,statement,statement,flow control,branch,flow control,loop,flow control,loop,endless loop,flow control,loop,traverse all elements in the array,traverse all attributes of JavaScript object,flo

5、w control,loop,stop external loop (name: looper),function,definition,do not need declare parameter type,function,definition,function,definition,function,definition,the number of parameters in constructor is unlimited,allow a series of string parameters, and the last one is the executive of the funct

6、ion, the statements are separated by “;” (semicolon),function,definition,function,Function, object, method and class,function directly call like Java method,object also create a object (Function),method append some object as method,class also get a Class, has the same,name of the function,function,c

7、all,non return, get null,function,this,function,attribute,in the function,function,Call method,parameters,arguments (array),parameter,type,method first,use object,Object-oriented,support inheritance syntax,inheritance mechanism is not perfect,use object,Object and linked data,like Map in Java, “key-value”,use object,Inheritance and prototype,mechanism,every class has prototype attribute,when extend function and attribute,to prototype, as extend the original,class,Cocos2d-JS v2.x use this,create object,create object,create null object, add function and attribute,create