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
"text/javascript">
function printArr(arr) {
document.write("
Elements in array are
");
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("
Trimming last 3 elements");
arr1.length = arr1.length - 3;
printArr(arr1);
document.write("
Trimming last 4 elements");
arr1.length = arr1.length - 4;
printArr(arr1);
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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