Java script 2

JavaScript Syntax

Java script statements  are separated by semicolons (;)

Ex:

var x = 2; var y = 3; var z = x + y; 

the values (fixed) are also known as literals are written directly instead of putting them in a qoutes

20.2

03

string are written as

"Google"

"Blackfacers"

 

Variables can be assigned values using = operator :

var x;

x=50;

Arithmetic operators :
 

(5*2)+5

 The values can be of string type can also be joined using operator + like

"Black" + "  " + "facers"

Blackfacers will be the output.

Java script comments :

Code after double slashes  //  or between      /*  and  */     is treated as a comment.

  Javascript program ex:

 var x = 10;
var y =5;
var z = x + y;
document.getElementById("sample").innerHTML = z;

JavaScript Code Blocks :

JavaScript statements can be grouped together in code blocks, inside curly brackets {...}.

 function myFunction()
{
    document.getElementById("demo").innerHTML = "Hello CODERS.";
    document.getElementById("sample").innerHTML = "How are you?";
}

Here function is a keyword.