JS从一开始(2)
Understand Program Flow(理解程序编译流程)
var a; a=5; var b; b = a+3; alert(b);
Line1 → Line2 → Line3 → Line4 → Line5
JavaScript executes a program from start to finish in order
var a; a=myfun(5); var b; b = a+3; alert(b);
Line1 → Line2 → Line3 → Line4 → Line5
______ ↓ ↑
______ function
______ myfun()
JavaScript will stop executing a program in order to execute the contents of a function.
Tags: javascripts, JS
