How to implement adding function in click event in js

In JavaScript, the following steps are used to implement the add function in the click event: Get the container element Create a new element Set the content of the new element Add a new element to the container Additional functions include: cancel addition, insert element and conditional addition.

Implement adding function in JavaScript click event

In JavaScript, you can use the following steps to add functions in the click event Implement the add function:

1. Get the container to which the element is to be added

First, we need to get the container element to which we want to add the new element. This can be done by using the document.getElementById() function or the document.querySelector() function.

<code class="javascript">const container = document.getElementById('my-container');</code>

2. Create a new element

Next, we need to create a new element to add to the container. This can be done using the document.createElement() function.

<code class="javascript">const newElement = document.createElement('p');</code>

3. Set the content of the new element

We can also set the content of the new element, such as text, image or other HTML elements.

<code class="javascript">newElement.textContent = '这是新元素';</code>

4. Add new elements to the container

Finally, we can use the appendChild() method to add new elements to the container.

<code class="javascript">container.appendChild(newElement);</code>

Sample code

The following is the complete sample code:

<code class="javascript">const container = document.getElementById('my-container');

const newElement = document.createElement('p');
newElement.textContent = '这是新元素';

container.appendChild(newElement);</code>

Additional functions

Also Use JavaScript to add additional functionality, such as:

• Unadd: Use the removeChild() method to remove an element from the container.
• Insert elements: Use the insertBefore() method to insert elements into the specified position in the container.
• Conditional addition: Use if/else statements or the ternary operator to add elements only if specific conditions are met.

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