jQuery | Traversing

In jQuery, traversing means moving through or over the HTML elements to find, filter or select a particular or entire element.
Based on the traversing purposes following methods are Categorized as follows:

Tree Traversing:

Ancestors:



  • parent()
    it gives parent element of specified selector
    Syntax:

    $(selector).parent();
  • parents()
    it gives all ancestor elements of the specified selector.
    Syntax:

    $(selector).parents();
  • parentsUntil()
    it gives all ancestor elements between specified selector and arguments.
    Syntax:

    $(selector).parentsUntil(selector, filter element)
    
    $(selector).parentsUntil(element, filter element)
    
  • offsetParent()
    it gives the first positioned parent element of specified selector.
    Syntax:

    $(selector).offsetParent();
  • closest()
    it gives the first ancestor of the specified selector.
    Syntax:

    $(selector).closest(selector);
    $(selector).closest(selector, context);
    $(selector).closest(selection);
    $(selector).closest(element);

Descendants:

  • children()
    it gives the children of each selected elements, optionally filtered by a selector.
    Syntax:

    $(selector).children();
    
  • find()
    it gives descendant elements of specified elements, filtered by a selector, jQuery object, or element.
    Syntax:

    $(selector).find('selector to find');

Siblings:

  • siblings()
    it gives all siblings of the specified selector.
    Syntax:


    $(selector).siblings();
  • next()
    it gives the next sibling element of the specified selector.
    Syntax:

    $(selector).next();
    
  • nextAll()
    it gives all next sibling elements of the specified selector.
    Syntax:

    $(selector).nextAll();
    
  • nextUntil()
    it gives all next sibling elements between specified selector and arguments.
    Syntax:

    $(selector).nextUntil();
    
  • prev()
    it gives the previous sibling element of the specified selector.
    Syntax:

    $(selector).prev(selector);
    
    $(selector).prev()
    
  • prevAll()
    it gives all previous sibling elements of the specified selector.
    Syntax:

    $(selector).prevAll(selector, filter element)
    
    $(selector).prevAll(element, filter element)
    
  • prevUntil()
    it gives all previous sibling elements between specified selector and arguments.
    Syntax:

    $(selector).prevUntil(selector, filter element)
    
    $(selector).prevUntil(element, filter element)
    

Filtering

  • first()
    it gives the first element of the specified selector.
    Syntax:

    $(selector).first();
    
  • last()
    it gives the last element of the specified selector.
    Syntax:

    $(selector).last();
    
  • eq()
    it gives an element with a specific index number of the specified selector.
    Syntax:


    $(selector).eq(index);
    
    $(selector).eq( indexFromEnd );
    
  • filter()
    it remove/detect an elements that are matched with specified selector.
    Syntax:

    $(selector).is(selector)
    $(selector).is(function)
    $(selector).is(selection)
    $(selector).is(elements)
  • has()
    it gives all elements that have one or more elements within, that are matched with specified selector.
    Syntax:

    $(selector).has(selector);
    
  • is()
    it checks if one of the specified selector is matched with arguments.
    Syntax:

    .is( selector )
    .is( function )
    .is( selection )
    .is( elements )
  • map()
    Pass each element in the current matched set through a function, producing a new jQuery object containing the return values
    Syntax:

    .map( callback )
  • slice()
    it selects a subset of specified selector based on its argument index or by start and stop value.
    Syntax:

    $(selector).slice(start, end );
    
    $(selector).slice(start);
    

Miscellaneous Traversing

  • add()
    it add all elements to set of matched elements to manipulate them at the same time.
    Syntax:

    $(selector).add(selector to add);
  • addBack()
    it add the previous set of elements on the stack to the current set, optionally filtered by a selector.
    Syntax:

    $(selector).addBack();
  • andSelf()
    Deprecated 1.8 which is alias of addBack().
    Syntax:

    $(selector).addSelf();
  • contents()
    it gives all direct children, including text and comment nodes, of the specified selector.
    Syntax:


    $(selector).contents();
  • not()
    it gives all elements that do not match with specified selector.
    Syntax:

    $(selector).not(selector);
  • end()
    it is most recent filtering operation in the current chain and return the set of matched elements to its previous state and it doesn’t accept any arguments.
    Syntax:

    $(selector).each(callback function);
    

Collection Manipulation

  • each()
    it iterates over the DOM elements and execute call back function

Example 1:

filter_none

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<!DOCTYPE html>
<html>
  
<head>
    <style>
        .siblings * {
            display: block;
            border: 2px solid lightgrey;
            color: lightgrey;
            padding: 5px;
            margin: 15px;
        }
    </style>
    <script src=
  </script>
    <script>
        $(document).ready(function() {
            $("h2").siblings().css({
                "color": "red",
                "border": "2px solid red"
            });
            $("h2").parent().css({
                "color": "green",
                "border": "2px solid blue"
            });
            $("p").first().css(
              "background-color", "yellow");
            $("p").has("span").css(
              "background-color", "indigo");
  
        });
    </script>
</head>
  
<body class="siblings">
  
    <div>GeeksforGeeks (parent)
        <p>GeeksforGeeks</p>
        <p><span>GeeksforGeeks</span></p>
        <h2>GeeksforGeeks</h2>
        <h3>GeeksforGeeks</h3>
        <p>GeeksforGeeks</p>
    </div>
  
</body>
  
</html>

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Output:

Example 2:

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<!DOCTYPE html>
<html lang="en">
  
<head>
    <meta charset="utf-8">
    <style>
        p {
            color: grey;
            margin: 10px;
            padding: 10px;
        }
          
        form {
            margin: 10px;
            padding: 10px;
        }
          
        #article b {
            color: blue;
            font-weight: bold;
        }
          
        label {
            color: green;
            font-weight: bold;
        }
    </style>
    <script src=
    </script>
</head>
  
<body>
  
    <p><em>Hello</em>GeeksforGeeks</p>
    <p id="article"><b>Article Info: </b></p>
    <form>
        <label>Article Title:</label>
        <input type="text"
               name="article" 
               value="jQuery | 
                     Traversing Example 2" />
        <br>
        <br>
        <label>Author:</label>
        <input type="text"
               name="author"
               value="Vignesh" />
        <br>
        <br>
        <label>Author's Email id:</label>
        <input type="text"
               name="author" 
               value="vignesh@gmail.com" />
        <br>
        <br>
        <label>Website:</label>
        <input type="text" 
               name="url"
               value="https://www.geeksforgeeks.org/" />
        <br>
        <br>
    </form>
  
    <script>
        $("#article")
            .append($("input").map(function() {
                    return $(this).val();
                })
                .get()
                .join(", "));
    </script>
    <script>
        $("p")
            .find("em")
            .end()
            .css("border", "2px red solid");
    </script>
  
</body>
  
</html>

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