Javascript Select

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Michael Zippo 04.11.2021

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As you will learn how to create web forms, one of the most common tasks is getting values ‚Äã‚Äãfrom drop - down menus. In this article, we are going to learn how to get these values ‚Äã‚Äãwith JavaScript.

Let’s take a quick rundown on how to create a dropdown element using HTML. Follow my Codepen if you get lost.

to build our drop down element we need to use the select and use the option children nested below. The selection element creates the drop-down menu and with the option tags we set these options in the drop-down menu live on.

Let’s create a dropdown menu of our favorite fruits (which have emojis).

we have added an empty h2 that we will fill in with JavaScript later. At this point you can choose your favorite fruit:

Here we access the attribute options d ’ array element. Next, we choose the index of the selected option and access its value or text.

Now try to console.log both variables. What’s going on? Nothing. Why? Because our first element has an empty value (it’s just a placeholder). Give your opinion on the first option and try again. Yay! We get the value and the text with the javascript.

Listening for drop down menu changes with javascript < / h2>

We need to make our dropdown menu dynamic because JavaScript is designed to react to changes on your page. With that in mind, we’re going to assign an eventListener to our fruit element.

With our eventListener we hear a change in our drop-down menu. Note that you can also get the value of the selected option by running e.target.value, which you probably saw in another tutorial module.

we are here. You can now select a fruit option and JavaScript will react to the changes in our drop-down menu and update our h2 accordingly. Successful Law

Conclusion

How unfolding values ‚Äã‚Äãis an essential skill as you learn web development . the values we get are important if we want to update a basic data show se lection to the user or just "react" to changes in the DOM. With JavaScript we can get these values ‚Äã‚Äãin no time