JavaScript Summary 2--Process Control

Process Control in JavaScript is basically the same as Java

Divided into sequential structure, selection structure (branching structure, conditional structure), cyclic structure

1. Sequential structure

is executed in the order of writing, which is the most basic structure in the program.

2. Select structure

2.1 If-else Statements

if (Grade >) {     document.write ("excellent");} Else if (Grade >) {     document.write ("good");} Else if (Grade >70) {     document.write ("Medium");} Else if (Grade >60) {     document.write ("pass");} Else {     document.write ("failed");}

2.2 Switch statement

Switch (tel) {    case ' document.write ':    ("Police alarm telephone");       Break ;     case ' 119 ':    document.write ("Fire alarm call");      Break ;     case ' + ':    document.write ("Hospital rescue Phone");      Break ;}

3. Cyclic structure

3.1 For Loop statement

 for (var i =1; i < temp; i++) {    document.write (i);}

3.2 While Loop statement

 while (I <) {documen.write (i);}

3.3 Do-while Loop statement

 Do {    document.write (i);}  while (1 < 10)

JavaScript Summary 2--Process Control