摘要： Chapter 5. Expressions and Operators1. Arithmetic Operators : Addition (+) , Subtraction (-) , Multiplication (*) , Division (/) ,Modulo (%) , Unary minus (-) , Unary plus (+) , Increment (++) , Decre... 阅读全文

摘要： Chapter 4. Variables1. Variable Declarationplease test the followings in browser. the result shoule be:a = undefinede = I have a value 2. Variable Scope1)JavaScript will implicitly declare that varia... 阅读全文