How to convert list of elements in an array using jQuery ?

Last Updated : 05 Sep, 2019

Given an HTML document containing a list of elements and the task is to get the values of HTML list and convert it into an array using JavaScript.

Approach:

Make a list(Ordered/ Unordered).
Select the parent of <li> element and call an anonymous function for every child of parent( .each() or .map() methods ).
Take the text value of each child and append that to the array.

Example 1: This example uses .each() method to convert a list of elements in an array.

<!DOCTYPE HTML>  
<html>  
  
<head>  
    <title>  
        How to convert list of elements
        in an array using jQuery ?
    </title>
      
    <script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">
    </script>
      
    <style>
        #ul {
            width: 80px;
            margin: 0 auto;
        }
    </style>
</head>  
  
<body align = "center">  
      
    <h1 style = "color:green;" >  
        GeeksForGeeks  
    </h1> 
      
    <p id = "GFG_UP" style = 
            "font-size: 15px; font-weight: bold;"> 
    </p>
      
    <ul id = "ul">
        <li>GFG_1</li>
        <li>GFG_2</li>
        <li>GFG_3</li>
    </ul>
      
    <br>
      
    <button onclick = "GFG_Fun()">
        click here
    </button>
      
    <p id = "GFG_DOWN" style = 
        "font-size: 24px; font-weight: bold; color: green;"> 
    </p>
      
    <script>  
        var el_up = document.getElementById('GFG_UP');
        var el_down = document.getElementById('GFG_DOWN');
          
        el_up.innerHTML = "Click on the button to get "
                    + "the values of list in array."; 
          
        function GFG_Fun() {
            var arr = [];
            $("ul li").each(function() { arr.push($(this).text())});
            el_down.innerHTML = '"' + arr.join('", "') + '"';
        } 
    </script>  
</body>  
  
</html>

Output:

Before clicking on the button:
After clicking on the button:

Example 2: This example uses .map() method to convert a list of elements in an array.

<!DOCTYPE HTML>  
<html>  
  
<head>  
    <title>  
        How to convert list of elements
        in an array using jQuery ?
    </title>
      
    <script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">
    </script>
      
    <style>
        #ul {
            width: 80px;
            margin: 0 auto;
        }
    </style>
</head>  
  
<body align = "center">  
      
    <h1 style = "color:green;" >  
        GeeksForGeeks  
    </h1> 
      
    <p id = "GFG_UP" style = 
        "font-size: 15px; font-weight: bold;"> 
    </p>
      
    <ul id = "ul">
        <li>GFG_1</li>
        <li>GFG_2</li>
        <li>GFG_3</li>
    </ul>
      
    <br>
      
    <button onclick = "GFG_Fun()">
        click here
    </button>
      
    <p id = "GFG_DOWN" style = 
        "font-size: 24px; font-weight: bold; color: green;"> 
    </p>
      
    <script>  
        var el_up = document.getElementById('GFG_UP');
        var el_down = document.getElementById('GFG_DOWN');
          
        el_up.innerHTML = "Click on the button to get "
                    + "the values of list in array."; 
          
        function GFG_Fun() {
            var arr = [];
            arr = $('li').map(function(j, element) {
                return $(element).text();
            }).get();
              
            el_down.innerHTML = '"' + arr.join('", "') + '"';
        } 
    </script>  
</body>  
  
</html>

Output:

Before clicking on the button:
After clicking on the button:

My Personal Notes

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