Conditional Classes in Vue
In this post, we will give you information about Conditional Classes in Vue – onlinecode. Here we will give you detail about Conditional Classes in Vue – onlinecode And how to use it also give you a demo for it if it is necessary.
Vue’s v-bind
syntax supports dynamically binding classes via an
object syntax.
const app = new Vue({
data: () => ({ isGreen: true }),
// 'div' will have class 'green' if 'isGreen' is true
template: '
<div v-bind:></div>
'
});
// Remove the class 'green' from the 'div'
app.$data.isGreen = false;
You can conditionally bind multiple classes, and use the :
shorthand for v-bind:
:
const app = new Vue({
data: () => ({ green: true, small: false }),
// 'div' will have class 'green' if 'green' is true
// and 'small' if 'small' is true.
template: '
<div :></div>
'
});
// Remove the class 'green' from the 'div' and add class 'small'
app.$data.green = false;
app.$data.small = true;
String Syntax
The value you bind to class with v-bind
can be a string, not just an
object. For example, you can store the class name in a data
string:
const app = new Vue({
data: () => ({ myClass: 'green' }),
// 'div' will have whatever class or classes are in the
// 'myClass' data value.
template: '
<div :></div>
'
});
// Remove the class 'green' from the 'div' and replace it
// with the class 'small'
app.$data.myClass = 'small';
Another neat approach is to use the ternary operator to decide which class the element will have:
const app = new Vue({
data: () => ({ isGreen: true }),
// 'div' will have class 'green' if 'isGreen' is true.
template: '
<div :></div>
'
});
// Remove the class 'green' from the 'div' and replace it
// with the class 'small'
app.$data.isGreen = false;
Array Syntax
You can also bind the class
to an array. Vue will then combine all
elements in the array to form the final class binding. This lets you
mix and match string and object syntax in one declaration:
const app = new Vue({
data: () => ({ green: true }),
// 'div' will have class 'green' if 'green' is true, and
// 'small' otherwise.
template: '
<div :></div>
'
});
// Remove the class 'green' from the 'div' and replace it
// with the class 'small'
app.$data.green = false;
Check it out!
More Vue Tutorials
- Methods in Vue
- Use the Ternary Operator for Conditionals in Vue
- Vue Email Validation
- How to Copy Content to the Clipboard in Vue
- Creating Computed Properties with Vue’s Composition API
- Toggle Visibility in Vue
- Add Global Variables to Vue JS Templates
Vue.js is a progressive JavaScript framework that makes building user interfaces simple and enjoyable. Vue is designed from the ground up to be incrementally adoptable, so you can use the features you need, and mix and match Vue with other libraries or frameworks.
Vue is a relatively new framework, but it has quickly become one of the most popular JavaScript frameworks in the world. It is used by large companies like Alibaba, Baidu, and Xiaomi, as well as by thousands of smaller businesses and startups.
Here are some of the features that make Vue.js so popular:
- Declarative rendering: Vue uses a declarative rendering model, which means that you can describe the desired output of your application in terms of HTML, CSS, and JavaScript. This makes it easy to reason about your code and to make changes to your application.
- Reactivity: Vue is a reactive framework, which means that it automatically updates the DOM whenever there is a change to the application’s state. This makes your application feel fast and responsive.
- Composition: Vue is a component-based framework, which means that you can build your application out of reusable components. This makes your code more maintainable and easier to test.
- Performance: Vue is a highly performant framework. It has been benchmarked against other popular JavaScript frameworks, and it has consistently outperformed them.
If you are looking for a JavaScript framework that is easy to learn, powerful, and performant, then Vue.js is a great choice.
Here are some of the things you can do with Vue.js:
- Build single-page applications
- Create user interfaces for web, mobile, and desktop applications
- Integrate with other JavaScript frameworks and libraries
- Build custom components
- Create reusable code
- Test your code
If you are interested in learning more about Vue.js, there are a number of resources available online. The official Vue.js website has a comprehensive documentation and a number of tutorials. There are also a number of third-party websites and blogs that offer tutorials, articles, and other resources about Vue.js.
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