Vue Class binding Ternary Operator:Vue Class binding is a feature of the Vue.js framework that allows developers to dynamically apply CSS classes to HTML elements based on certain conditions or states. The ternary operator, often used in combination with Vue Class binding, is a shorthand way of writing an if-else statement.

In Vue, the ternary operator can be used within the v-bind directive to conditionally add or remove a CSS class based on the result of a boolean expression. The syntax looks like this:

:class=”{ ‘class-name’: condition ? true-value : false-value }”

This means that if the condition is true, the class “class-name” will be applied with the value of true-value, and if it’s false, the class will be applied with the value of false-value.

How do you use a ternary operator for Vue class binding?

In Vue, you can use a ternary operator to dynamically bind a class based on a condition. In the provided code, the isActive property is used to toggle between the active and inactive classes.

To use the ternary operator for Vue class binding, you can modify the v-bind:class directive as follows:

<div v-bind:class="isActive ? 'active' : 'inactive'">This is Some Paragraph</div>

Here, the expression isActive ? 'active' : 'inactive' checks if the isActive property is true or false and sets the class name accordingly.

When the isActive property is true, the active class will be applied to the div element, and when it is false, the inactive class will be applied.

You can also toggle the value of isActive by adding an @click event listener to the button element, like this:

<button @click="isActive = !isActive">Click</button>

This will toggle the value of isActive between true and false, which will update the class binding on the div element accordingly.

Vue Class binding Ternary Operator Example

<div id="app">
   <div v-bind:class="isActive ? 'active' : 'inactive'">This is Some Paragarph</div>
   <button @click="isActive = !isActive">Click</button>
</div>
 <script type="module">
        const app = new Vue({
            el: "#app",
            data() {
                return {
                    isActive: true // Or false, depending on your needs
                };
            },

        });
</script>
 <style scoped>
        .active {
            background-color: #4CAF50;
            color: #fff;
            padding: 10px;
            border-radius: 5px;
        }

        .inactive {
            background-color: #ddd;
            color: #333;
            padding: 10px;
            border-radius: 5px;
        }
 </style>

Output of Vue Class binding Ternary Operator