Applying Styles Dynamically with Vue.js
Hello, students! Welcome to Lesson 1 of Binding CSS Styles in Vue.js. Today, we will learn how to apply CSS styles dynamically with Vue.js.
Vue.js applications can use CSS to style their components. However, often it is necessary to apply styles dynamically, depending on the application’s state.
For example, you might want to apply a different style to an element if it’s selected or if the user is scrolling down the page.
In this lesson, we will learn to apply styles dynamically using the v-bind
directive.
Applying Styles Using v-bind
The v-bind
directive allows you to bind data from a component to CSS properties.
The syntax for applying styles using v-bind
is as follows:
<element v-bind:style="value">
Where:
element
is the element to which you want to apply the style.style
is the name of the CSS property you want to bind.value
is the value you want to bind to the CSS property.
Example:
<div v-bind:style="{ color: color }"> This text is <strong>blue</strong>. </div>
In the example above, the text inside the div
element will be blue if the color
property of the component is set to blue
.
Using Expressions in v-bind
You can also use expressions in v-bind
to bind dynamic data to CSS properties.
Example:
<div v-bind:style="{ color: color }"> This text is <strong>{{ color }}</strong>. </div>
In the example above, the text inside the div
element will be colored the same as the color
property of the component.
Applying Styles to Classes
You can also use v-bind
to apply styles to classes.
Example:
<div v-bind:class="{ active: isActive }"> This text is <strong>active</strong> if the `isActive` property of the component is set to `true`. </div>
In the example above, the active
class will be added to the div
element if the isActive
property of the component is set to true
.
Conclusion
Applying styles dynamically with Vue.js is a powerful way to customize your applications.
By learning to use v-bind
to apply styles dynamically, you can create applications that are more responsive and interactive.
Challenge
Here’s a challenge for you:
- Create an application that displays a list of items. Each item should have a different color depending on its status.
Good luck!
Tip
You can use the v-bind
directive to bind the color
property of each item to its status
property.