Vue.js Ep. 4 – Computed properties

Computed properties are an essential feature in Vue.js that allows you to perform complex calculations on your data and automatically update the DOM when the data changes.

Here’s an example of how to use computed properties in Vue.js:

var app = new Vue({
el: ‘#app’,
data: {
message: ‘Hello, Vue.js!’
},
computed: {
reversedMessage: function() {
return this.message.split(”).reverse().join(”);
}
}
});

In this example, we have a simple Vue.js app with a message data property. We also have a computed property called reversedMessage, which takes the message, splits it into individual characters, reverses the order, and then joins it back together to create the reversed message.

When the message data property changes, the reversedMessage computed property will automatically update, and the new value will be displayed in the DOM.

Computed properties are a powerful tool in Vue.js for performing data manipulation and transformations without cluttering up the template with too much logic. They are especially useful for handling complex calculations and filtering of data.

Overall, computed properties are an important feature in Vue.js that can help you keep your code organized, maintainable, and efficient.