Скачать или смотреть Change Cell Color Based on Value in VueJs & Vuetify

Learn how to dynamically change cell colors in VueJs and Vuetify based on values from a JSON file. This guide demonstrates a clear method to implement conditional styling in your table.
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This video is based on the question https://stackoverflow.com/q/66152189/ asked by the user 'Antoine Kurka' ( https://stackoverflow.com/u/14997989/ ) and on the answer https://stackoverflow.com/a/66152236/ provided by the user 'Dan' ( https://stackoverflow.com/u/2185093/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Change Cell Color Based on Value in VueJs & Vuetify: A Simple Guide

When working with data tables in VueJs and Vuetify, you may find yourself needing to change the appearance of certain cells based on their values. This capability can enhance data visualization and user experience dramatically. Let's explore a scenario where you want to change the cell color to green if the value is "OK" and to red if it's "KO". The problem arises when your table column turns entirely green, regardless of the actual value. Don’t worry; we’ll go through a solution step-by-step!

Understanding the Problem

You might be implementing a v-simple-table component and have set up your table cells like this:

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

While you intended for the cell's color to depend on the content of item.pcb1, this implementation fails because the condition evaluates whether the variable OK is truthy, rather than the actual value of item.pcb1. This oversight leads to the entire column being colored identically.

Step-by-Step Solution

Let's walk through how to effectively change the cell color based on the actual values of item.pcb1. We will modify our class binding to ensure we are checking the value correctly.

1. Modify the Class Binding

Instead of checking OK, which is not tied to your data, we need to check the value of item.pcb1 directly. Replace your existing class binding with the following code:

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

2. Explanation of the Code

item.pcb1: This refers to the property you are checking from your JSON data. Ensure that item is being correctly iterated over in your v-for loop.

Condition Evaluation: The === operator is used to check if item.pcb1 is exactly equal to the string "OK". If it is, we assign the class 'primary' which usually renders in green (you can adjust the class names based on your desired colors). If not, it assigns the class 'accent', likely rendering in red.

3. Highlighting the Change

By making this adjustment, you ensure that the cell's class changes correctly according to the content of the data. Here’s a summary of the logic:

If item.pcb1 equals "OK", the cell color will be green (or whatever color you define with the class 'primary').

If it equals anything else (including "KO"), the cell color will change to red (or the color linked to the class 'accent'.

Conclusion

By implementing the above-mentioned solution, you're on your way to creating a more dynamic and visually informative table with VueJs and Vuetify. Conditional styling not only enhances usability but also improves how users interpret the data at a glance. This can be immensely beneficial for larger datasets where quick insights are crucial.

Feel free to experiment with different class names and styling options based on your project’s theme. Remember, coding is all about making sure your code serves your needs. Happy coding!