JavaScript Array method: push()
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The push() method (when applied to a JavaScript
array) joins
arrays and returns a copy of the joined array.
It
has the following syntax with the following parameters. It returns a number
representing the new length of the array.
array.push(item1, item2, …)
|
Parameter
|
Required / Optional
|
Description
|
|
item1, item2, …
|
Required
|
The item(s) to be added
to the array
|
EXAMPLE:
HTML USED IN THIS EXAMPLE:
<!DOCTYPE html>
<html> <!-- Copyright (c) Nematrian Limited 2018 -->
<head>
<style>
table,th,tr,td {border: 1px solid black; border-collapse: collapse;}
</style>
</head>
<body>
<table>
<tr>
<th>Example</th>
<th>Resulting value of <code>x</code></th>
</tr>
<tr>
<td><code id="Example"></code></td>
<td><code id="Result"></code></td>
</tr>
</table>
<script>
var h = [-1, 2, 3];
var y = h.push(5, 4);
document.getElementById("Example").innerHTML =
'var h = [-1, 2, 3];<br>' +
'var y = h.push(5, 4);<br>' +
'var x = h + "|" + y;';
document.getElementById("Result").innerHTML = h + "|" + y;
</script>
</body>
</html>
|
FUNCTION THAT MAY ASSIST IN TESTING WHETHER FEATURE IS SUPPORTED:
function isSupportedJavaScriptMethodArrayPush() {
var h = [1, 2, 3]; return !!h.push;
} |
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