jquery .not or

Understanding jQuery .not() method

As a web developer, you might have come across a situation where you need to select all elements from a set of matched elements except those that match a specific selector. This is where jQuery .not() method comes in handy.

Syntax

$(selector).not(filter)

• selector: The set of matched elements to be filtered.
• filter: The selector, function or element to be removed from the matched set.

Example

Let's say we have a list of fruits and we want to select all fruits except bananas:

<ul id="fruits">
  <li>Apples</li>
  <li>Bananas</li>
  <li>Oranges</li>
  <li>Pineapples</li>
</ul>

<script>
  $(document).ready(function(){
    $('#fruits li').not(':contains("Bananas")').css('color', 'green');
  });
</script>

Here, we have used the .not() method to filter out bananas from the list of fruits and applied a green color to the rest of the fruits.

Using Multiple Selectors

You can also use multiple selectors with jQuery .not() method:

<ul id="fruits">
  <li class="red">Apples</li>
  <li class="yellow">Bananas</li>
  <li class="orange">Oranges</li>
  <li class="green">Pineapples</li>
</ul>

<script>
  $(document).ready(function(){
    $('#fruits li').not('.red, .green').css('color', 'orange');
  });
</script>

Here, we have used multiple selectors to filter out items with classes red and green from the list of fruits and applied an orange color to the rest of the fruits.

Conclusion

The jQuery .not() method is a powerful tool for filtering out elements from a set of matched elements based on a specific selector. It can be used in a variety of situations and can help you save a lot of time and effort. Hopefully, this article has given you a good understanding of how to use the .not() method in your own projects.