How to use vue to display elements or text when hovering

It is a popular JavaScript framework that can make the development of web applications easier and more efficient. In this tutorial, we will learn how to use , to display elements or text while the mouse is hovering.

This tutorial will cover the following topics:

• Binding events in
• Show and hide elements/text
• Use the vue directive to change element properties
• Use CSS to beautify our effects

Step 1: Bind the event in

First, we need to learn how to bind events in order to be able to trigger corresponding actions when the mouse is hovering.

In, we can passv-onDirective to bind events. For example, when hovering, we can use the following command tohoverHandlerFunction binding tomouseoverEvent:

<div v-on:mouseover="hoverHandler">Hover me!</div>

In the above code, we add a div element namedhoverHandlerMethod and usev-on:mouseoverBind this method tomouseoverOn the incident.

Step 2: Show and Hide Elements/Text

Once we have definedhoverHandlerMethod and bind it tomouseoverOn events, we need to write some code to display or hide the elements or text we want to operate on.

We can define a Boolean typeshowvariables, then inhoverHandlerSet it to true or false in the method to control the display and hiding of elements or text.

Here is an examplehoverHandlerImplementation of the method, when the mouse hovers over the element, it will display a text string:

data: {
    show: false
},
methods: {
    hoverHandler: function() {
         = true;
    }
}

Here, we aredataDefined inshowvariables and inhoverHandlerSet it to true in the method.

Next, we need toshowThe value of the variable is bound to the element or textv-showAttributes. For example, in our example above, we can bind a div element to display a text string when the mouse is hovered:

<div v-on:mouseover="hoverHandler" v-show="show">This is some text.</div>

Step 3: Use the vue directive to change element properties

In addition to usingv-showIn addition to displaying or hiding elements, we can also use other directives to change element properties. For example, we can usev-bindTo bind an elementclassProperties so that it can change its style when the mouse is hovered.

Here is an examplehoverHandlerImplementation of the method to change the background color of the div element when hovering:

data: {
    bgClass: 'bg-blue'
},
methods: {
    hoverHandler: function() {
         = 'bg-red';
    }
}

In the above code, we definebgClassvariables and inhoverHandlerIn the method, take it from'bg-blue'Change to'bg-red'。

To putbgClassBind to div elementclassIn terms of attributes, we can usev-bind:classInstructions. For example:

<div v-on:mouseover="hoverHandler" v-bind:class="bgClass">Hover me!</div>

This will make the div element inbgClassWhen the value of   is changed, it will be automatically changed.classAttributes.

Step 4: Use CSS to beautify our effects

Finally, we can use CSS to beautify our effects. For example, we can add some transition effects to the div element to make it more smooth animations when displayed and hidden.

Here is an implementation of an example CSS stylesheet that enables div elements to have a fade transition effect when displayed and hidden:

div {
    transition: opacity 0.5s;
}
-enter,
-leave {
    opacity: 0;
}

In the above code, we usetransitionAttributes to define transition effects and useng-enterandng-leaveClass to specify the start and end states of the animation.

After completing the above steps, we can create a complete mouseover effect that allows elements or text to be displayed or hidden when the mouseover is hovered and has a transition effect when the operation is performed.

To sum up, this is a detailed tutorial on how to use it to display elements or text while the mouse is hovered. By studying this tutorial, you will master the skills of binding events, showing and hiding elements/text in , and using CSS to beautify our effects.

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