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In this article we will discuss about popup window and closing it. To open a window by using window.open(). The window.open() has as 4 optional parameters.

In this article we will discuss recursive functions in JavaScript. The recursive is a function that calls itself by looping there must be a break otherwise it will create infinite loops.

In this article we will discuss how to handle exception in JavaScript. The exception may occur at run time due to errors such as referencing a variable or a method that is not defined.

In this article we will discuss implementing how to filter odd number using from array in JavaScript. Below example we are using a callback function Isodd it will result the odd numbers.

In this article we will discuss how to remove duplicates from JavaScript array. This can be implemented by using filter() method.

A function allows us to write code once and we can use it as many times as our wish just by calling the function. A function eliminates the need of writing the same code again and again.

In this article we will discuss implementing while loop. The while statement creates a loop that executes a specific statement until the certain condition is met.

In this article we will discuss implementing for loop. For statement creates a loop it consist of three optional expressions separated by semicolons. If the condition is true then the code executed inside the loop, otherwise the control will be out of the loop. The iteration statement where we can increase or decrease count.

In this article we will discuss implementing switch statement. The switch statement is used to perform different actions based on different condition. In order to improve the readability of a program multiple if else statements can be replaced with a switch statement.

In this article we will discuss implementing else statement. We can use else statement to specify a block of code to executed when the condition is false.