About the scope in javascript,why the following not output 21 but 22?
317
What is the scope of variables in JavaScript?
58365
Why does Java not have block-scoped variable declarations?
99805
Referencing a JavaScript value before it is declared - can someone explain this
115133
Why this loop with "evaluate" does not work?
85118
What happens with event handlers when an object goes out of scope?
127626
Javascript variable scope in a JS URI, or how to write page-scope objects?
115381
Why variable hoisting after return works on some browsers, and some not?
26433
How does variable assignment work in JavaScript?
16287
Why do I see a double variable initialized to some value like 21.4 as 21.399999618530273?
1333
What is JavaScript's highest integer value that a number can go to without losing precision?
78951
Why does Javascript getYear() return 108?
142031
Variable scope confusion in C#
57792
Why is this happening with the sizeof operator when comparing with a negative number?
109430
What is the scope of the local variable/methods of an instance
44243
Question on operator: // N
27136
Reference: What is variable scope, which variables are accessible from where and what are "undefined variable" errors?
34264
Why is my HelloWorld function not declared in this scope?