Check out example codes for "variables". It will help you in understanding the concepts better.

Code Example 1

var something = something;

Code Example 2

//You can make a variable by using:
var variable-name = 'defenition of the variable';
// Or you can use
let variable-name = 'defenition of the variable';

Code Example 3

/* In PHP, a variable starts with the $ sign, 
followed by the name of the variable:

$txt = "Hello world!";
$x = 5;
$y = 10.5;

Code Example 4

//variables can include any letter, any number, or the underscore
	//variable names are case sensitive (i.e. this_variable is different from ThiS_VarIaBle)
var change_this = 'whatever you want here'
	//change_this is a variable (change it to your variable name)
	//'whatever you want here' is an assignment to the variable change_this.

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