郭龙仓的专栏

摘要： Copyright (2013) 郭龙仓. All Rights Reserved.变量声明与表达式(declarations and expressions)代码示例：1 var a; // declaration2 var a = 2; // declaration and expression3 var func1 = function(){ alert(3) }; // declaration and expression4 function func2(){ alert(4) }; // declaration a function5 (function(){ alert(5) }) 阅读全文