JavaScript basic syntax

JavaScript is a scripting language

<script type= "Text/javascript" ></script>

Alert ("") Warning dialog box

Confirm ("") appears OK and cancel

Confirm ("") lets the user enter

Data type

Defined variables are defined with var .

Variable transformation into integer parseint()

Determines whether a number is an array IsNaN(); is a number that returns false not a number returns true;

Operator

Mathematical operator +-*%

Relational operator = =! = > <

Logical Operators && | |

Statement

Branch Statement if (condition)

Loop statement for (loop condition)

With C # form the same

Array

Defines an array var a=new array ()

Array assignment a[0]=123 a[1]= "12"

Function

function Add ()

{function body

}

JavaScript basic syntax