You can trim the elements of array by calling the pop method on
the array. There is another smart way also; using length property of array you
can trim the array.
arr.length
= 3;
Above statement
keeps only 3 elements.
array.html
<!DOCTYPE html> <html> <head> <title>Array</title> </head> <body> <script type="text/javascript"> function printArr(arr) { document.write("<br /> Elements in array are <br />"); for (i = 0; i < arr.length; i++) { document.write(arr[i] + " "); } } var arr1 = [2, 3, 5, 7, 11, 13, 17, 19, 23]; printArr(arr1); document.write("<br /><br /> Trimming last 3 elements"); arr1.length = arr1.length - 3; printArr(arr1); document.write("<br /><br /> Trimming last 4 elements"); arr1.length = arr1.length - 4; printArr(arr1); </script> </body> </html>
Open above
page in browser, you can able to see following data.
Elements
in array are
2 3 5 7 11
13 17 19 23
Trimming
last 3 elements
Elements
in array are
2 3 5 7 11
13
Trimming
last 4 elements
Elements
in array are
2 3
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