Скачать или смотреть How to Properly Display User Input in a span Element Using jQuery

Learn how to display user input calculations in a `span` element with jQuery instead of using `.load()`. Perfect for beginners!
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This video is based on the question https://stackoverflow.com/q/78203551/ asked by the user 'SmartWebProductions' ( https://stackoverflow.com/u/5183800/ ) and on the answer https://stackoverflow.com/a/78203673/ provided by the user 'dram95' ( https://stackoverflow.com/u/13335147/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Struggling to Display User Input in a span Element? Here's How to Fix It!

As a newcomer to JavaScript and jQuery, you might find yourself encountering challenges when it comes to displaying data from input fields. A common issue developers face is needing to show calculated data in an HTML element effectively. If you've found yourself stuck trying to display user input computations in a span element, you're not alone! Let's break down how to overcome this problem step-by-step.

The Problem

In your current setup, you have an input field and a span element designed to show the results of a mathematical calculation. While your code successfully processes the user input, the method being used to display the value in the span isn't correct. Instead of showing the value, it might be loading it incorrectly or not displaying it at all.

Given HTML Code

You have the following HTML structure:

[[See Video to Reveal this Text or Code Snippet]]

The JavaScript Code You Tried

Currently, you are using this jQuery code:

[[See Video to Reveal this Text or Code Snippet]]

The use of .load() here is not suitable for this type of operation. This method is typically intended for retrieving HTML content from a server rather than updating a specific element's text.

The Solution

To resolve this issue, it's essential to use the correct jQuery method to update the text of the span element. Instead of .load(), you should utilize the .text() method.

Here’s the Correct Code:

Replace your original code with the following:

[[See Video to Reveal this Text or Code Snippet]]

Breakdown of the Code

$(document).ready(): This ensures that your JavaScript runs only after the document is fully loaded.

$("#level").keyup(function() {...}): This binds a function to the keyup event on your input field, meaning it will react every time a user types in the field.

let dInput = $(this).val();: This line captures the current value of the input field.

Calculation: It computes the cost using the formula you provided.

$('#cash').text(cost);: This final step updates the span element with the calculated cost.

Conclusion

By implementing this simple change, you will correctly display the results of your calculations in the span element based on user input. Don't forget to test your updated code to ensure everything works smoothly. With practice and experimentation, you'll quickly overcome these initial hurdles in web development.

If you have any further questions or run into additional issues, feel free to ask for more help. Happy coding!