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MSDN Library

pop Method (JavaScript)

Removes the last element from an array and returns it.

arrayObj.pop( )

The push and pop methods enable you to simulate a stack, which uses the principle of last in, first out (LIFO) to store data.

The required arrayObj reference is an Array object.

If the array is empty, undefined is returned.

The following example illustrates the use of the pop method.

var number;
var my_array = new Array();

my_array.push (5, 6, 7);
my_array.push (8, 9);

number = my_array.pop();
while (number != undefined)
   {
   document.write (number + " ");
   number = my_array.pop();
   }

// The preceding code displays the following: 9 8 7 6 5

Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards. See Version Information.

Applies To: Array Object (JavaScript)

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