Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Update array push merging two arrays #6913

Merged
merged 3 commits into from
Jul 16, 2021
Merged

Update array push merging two arrays #6913

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
d9a255b
Update array push merging 2 arra
jadjoubran Jul 15, 2021
f988c11
Suppress code formatting for a non-identifier link text
wbamberg Jul 16, 2021
81dc3c5
Merge remote-tracking branch 'upstream/main' into patch-7
wbamberg Jul 16, 2021
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
14 changes: 5 additions & 9 deletions files/en-us/web/javascript/reference/global_objects/array/push/index.html
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -71,24 +71,20 @@ <h3 id="Adding_elements_to_an_array">Adding elements to an array</h3>

<h3 id="Merging_two_arrays">Merging two arrays</h3>

<p>This example uses {{jsxref("Function.apply", "apply()")}} to push all elements from a
second array.</p>

<p>Do <em>not</em> use this method if the second array (<code>moreVegs</code> in the
example) is very large because the maximum number of parameters that one function can
take is limited in practice. See {{jsxref("Function.apply", "apply()")}} for more
details.</p>
<p>This example uses {{jsxref("Operators/Spread_syntax", "spread syntax", "", "1")}} to push all elements from a
second array into the first one.</p>

<pre class="brush: js">let vegetables = ['parsnip', 'potato']
let moreVegs = ['celery', 'beetroot']

// Merge the second array into the first one
// Equivalent to vegetables.push('celery', 'beetroot')
Array.prototype.push.apply(vegetables, moreVegs)
vegetables.push(...moreVegs);

console.log(vegetables) // ['parsnip', 'potato', 'celery', 'beetroot']
</pre>

<p>Merging two arrays can also be done with the {{jsxref("Array.prototype.concat()", "concat()")}} method.</p>

<h3 id="Using_an_object_in_an_array-like_fashion">Using an object in an array-like fashion
</h3>

Expand Down