- You can choose elements with a specific class name.
- Whenever the user inputs information in a form, you can grab the value by targeting that specific input field (no matter the number of other input fields available on the current page).
- For instance, you can add a paragraph just before an h1 tag.
- For instance, if you create a user gallery page, you would want to know which user is clicked to show the appropriate information that belongs to the user.
- A financial calculator (specifically an interest rate calculator). You will need to get the user input to carry out the necessary calculation and print out the value to the user.
- Another aspect is animation. To carry out animation on the webpage, you will need to determine the size of the window and move the image from the bottom to the top (checking for the viewport sizes).
- When a webpage finishes loading
- When a button is pressed, clicked or tapped.
- Within a time range or when a time has passed.
- When a cursor hovers over an element.
With the powerful programming language, you can access content on the page, modify the content you selected, program steps for the browser to execute and react to users actions on your webpage.
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