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    <title>array</title>
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      <div class="header">
        <h1>array</h1>
        <p class="header__description">
          Arrays in JavaScript are ordered collections of values that can hold
          different data types, such as numbers, strings, or objects. They are
          denoted by square brackets [] and allow you to store and manipulate
          multiple items in a single variable. Arrays are zero-indexed, meaning
          the first element is accessed using index 0, the second with index 1,
          and so on. They offer various built-in methods for adding, removing,
          and manipulating elements, making them fundamental for managing and
          organizing data in JavaScript.
        </p>
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    <div id="code">
      <p>simple array</p>
      <pre><code class="language-js">
let fruits = ["apple", "orange", "banana"];
console.log(fruits); // (3) 0: "apple" 1: "orange" 2: "banana" length: 3
console.log(fruits[1]); // orange 
      </code></pre>
      <p>replace certain element in array using index number</p>
      <pre><code class="language-js">
let fruits = ["apple", "orange", "banana"];
fruits[0] = "coconut";
console.log(fruits); // (3) 0:"coconut" 1:"orange" 2:"banana" length 3
      </code></pre>
      <p>add element to the end of array</p>
      <pre><code class="language-js">
let fruits = ["apple", "orange", "banana"];
fruits.push("lemon"); // add an element
console.log(fruits); // (4) 0: "apple" 1: "orange" 2: "banana" 3: "lemon"
      </code></pre>
      <p>remove last element</p>
      <pre><code class="language-js">
let fruits = ["apple", "orange", "banana"];
fruits.pop(); // remove last element
console.log(fruits); // (2) 0: "apple" 1: "orange"
      </code></pre>
      <p>add element to beginning</p>
      <pre><code class="language-js">
let fruits = ["apple", "orange", "banana"];
fruits.unshift("mango"); // add element to beginning
console.log(fruits); // (4) 0: "mango" 1: "apple" 2: "orange" 3: "banana"
      </code></pre>
      <p>remove element from beginning</p>
      <pre><code class="language-js">
let fruits = ["apple", "orange", "banana"];
fruits.shift(); // remove element from beginning
console.log(fruits); // (2) 0: "orange" 1: "banana"
      </code></pre>
      <p>array length</p>
      <pre><code class="language-js">
let fruits = ["apple", "orange", "banana", "mango", "lemon"];
let length = fruits.length;
console.log(length); // 5
      </code></pre>
      <p>array index</p>
      <pre><code class="language-js">
let fruits = ["apple", "orange", "banana", "mango", "lemon"];
let index = fruits.indexOf("banana");
console.log(index); // 2
      </code></pre>
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