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JS-Array-Pop-&-Push.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>JS Do While Loop</title>
<style>
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<body>
<h1>JS Array Pop & Push</h1>
<h1>Array Pop()</h1>
<p>The pop() method removes (pops) the last element of an array.</p>
<p>The pop() method changes the original array.</p>
<p>The pop() method returns the removed element.</p>
<h3>Syntax</h3>
<pre
class="language-javascript"
tabindex="0"
><code class="language-javascript">array<span class="token punctuation">.</span><span class="token function">pop</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">??</span><span class="token operator">??</span><span class="token operator">??</span><span class="token operator">?</span>
</code></pre>
<h1>Parameters</h1>
<p>None</p>
<h1>Return Value</h1>
<table class="table table-bordered table-striped">
<tbody>
<tr>
<td>
<p>Type</p>
</td>
<td>
<p>Description</p>
</td>
</tr>
<tr>
<td>
<p>A variable</p>
</td>
<td>
<p>
The removed item.<br />
A string, a number, an array, or any other type allowed in an
array.
</p>
</td>
</tr>
</tbody>
</table>
<pre
class="language-markup"
tabindex="0"
><code class="language-markup"><span class="token doctype"><span class="token punctuation"><!</span><span class="token doctype-tag">DOCTYPE</span> <span class="token name">html</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>html</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>head</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>title</span><span class="token punctuation">></span></span>JavaScript<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>title</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>script</span><span class="token punctuation">></span></span><span class="token script"><span class="token language-javascript">
<span class="token keyword">var</span> a <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">"Sanjay"</span><span class="token punctuation">,</span> <span class="token string">"Aman"</span><span class="token punctuation">,</span> <span class="token string">"Rehman"</span><span class="token punctuation">,</span> <span class="token string">"Karan"</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
document<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span>a <span class="token operator">+</span> <span class="token string">"<br><br>"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
a<span class="token punctuation">.</span><span class="token function">pop</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
document<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span>a<span class="token punctuation">)</span><span class="token punctuation">;</span>
</span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>script</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>head</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>body</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>body</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>html</span><span class="token punctuation">></span></span>
</code></pre>
<h1>Array push()</h1>
<p>The push() method adds new items to the end of an array.</p>
<p>The push() method changes the length of the array.</p>
<p>The push() method returns the new length.</p>
<h3>Syntax</h3>
<pre
class="language-javascript"
tabindex="0"
><code class="language-javascript">array<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span>item1<span class="token punctuation">,</span> item2<span class="token punctuation">,</span> <span class="token operator">...</span><span class="token punctuation">,</span> itemX<span class="token punctuation">)</span>
</code></pre>
<h1>Parameters</h1>
<table class="table table-bordered table-striped">
<tbody>
<tr>
<td>
<p>Parameters</p>
</td>
<td>
<p>Description</p>
</td>
</tr>
<tr>
<td>
<p>
<em>item1</em><br />
<em>item2</em><br />
..<br />
<em>itemX</em>
</p>
</td>
<td>
<p>
The item(s) to add to the array.<br />
Minimum one item is required.
</p>
</td>
</tr>
</tbody>
</table>
<h1>Return Value</h1>
<table class="table table-bordered table-striped">
<tbody>
<tr>
<td>
<p>Type</p>
</td>
<td>
<p>Description</p>
</td>
</tr>
<tr>
<td>
<p>A number</p>
</td>
<td>
<p>The new length of the array.</p>
</td>
</tr>
</tbody>
</table>
<pre
class="language-markup"
tabindex="0"
><code class="language-markup"><span class="token doctype"><span class="token punctuation"><!</span><span class="token doctype-tag">DOCTYPE</span> <span class="token name">html</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>html</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>head</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>title</span><span class="token punctuation">></span></span>JavaScript<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>title</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>script</span><span class="token punctuation">></span></span><span class="token script"><span class="token language-javascript">
<span class="token keyword">var</span> a <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">"Sanjay"</span><span class="token punctuation">,</span> <span class="token string">"Aman"</span><span class="token punctuation">,</span> <span class="token string">"Rehman"</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
a<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span><span class="token string">"Rahul"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
document<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span>a <span class="token operator">+</span> <span class="token string">"<br><br>"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
a<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span><span class="token string">"Salman"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
document<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span>a <span class="token operator">+</span> <span class="token string">"<br><br>"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>script</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>head</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>body</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>body</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>html</span><span class="token punctuation">></span></span>
</code></pre>
</body>
<script>
let ary = ["Hamza Khan Lodhi", "Uamr Hayat Khan Lodhi"];
document.write("<h4>ARRAY</h4>" + ary, "<br>");
ary.pop();
document.write("<h4>.POP()</h4>" + ary, "<br>");
ary.push("Zaid");
document.write("<h4>.PUSH()</h4>" + ary, "<br>");
</script>
</html>