How to implement image mask and border animation in Vue?

How to implement image mask and border animation in Vue?

In web design, pictures are one of the most common elements. In order to make the picture more visually impactful and effective, we usually add mask effects and border animations to the picture. This article will introduce how to use Vue.js to achieve these two effects and provide corresponding code examples.

1. Picture masking effect

The picture masking effect is to superimpose a translucent mask layer on the picture to make the picture appear brighter and more prominent. The following is a sample code that uses Vue.js to achieve the image masking effect:

<template>
  <div class="image-container">
    <img src="/static/imghwm/default1.png"  data-src="example.jpg"  class="lazy" alt="example">
    <div class="image-overlay"></div>
  </div>
</template>

<style>
.image-container {
  position: relative;
  width: 200px;
  height: 200px;
}

img {
  width: 100%;
  height: 100%;
}

.image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
}
</style>

In the above code, we first create a container containing the image and mask layer, and use css to set the width and height of the container , and set the position:relative attribute. The mask layer uses position:absolute for absolute positioning and covers the image. Use the background-color property to set the color of the mask layer and set the translucency using rgba.

With this layout and style setting, we can achieve the image masking effect. If you need to add other styles and animation effects to the image, you can also do it by modifying the corresponding CSS style.

2. Picture border animation

Picture border animation is to add a dynamic border effect to the picture to make the picture look more vivid and attractive. The following is a sample code that uses Vue.js to implement image border animation:

<template>
  <div class="image-container">
    <img class="[imageBorder ?  lazy"  src="/static/imghwm/default1.png"  data-src="example.jpg"  alt="example" :border-animation' : '']">
  </div>
</template>

<script>
export default {
  data() {
    return {
      imageBorder: false
    }
  },
  mounted() {
    // 在mounted钩子函数中添加边框动画的触发时机
    this.startAnimation();
  },
  methods: {
    startAnimation() {
      setInterval(() => {
        this.imageBorder = !this.imageBorder;
      }, 1000); // 设置边框动画的间隔时间，单位为毫秒
    }
  }
}
</script>

<style>
.image-container {
  position: relative;
  width: 200px;
  height: 200px;
}

img {
  width: 100%;
  height: 100%;
}

.border-animation {
  border: 2px solid red;
  animation: borderAnim 1s infinite alternate;
}

@keyframes borderAnim {
  0% {
    border-radius: 0;
  }
  50% {
    border-radius: 50%;
  }
  100% {
    border-radius: 0;
  }
}
</style>

In the above code, we first create a container containing the image, and use css to set the width and height of the container. The border style of the image uses dynamic binding: class attribute, and whether to add the border-animation class is determined based on the value of imageBorder. By setting the border style and animation attributes, we achieve the effect of picture border animation.

In Vue's mounted hook function, we call the startAnimation method to trigger the border animation. In the startAnimation method, we use the setInterval function to regularly modify the value of imageBorder so that it switches between true and false. Through this logic, we realize the loop playback effect of picture border animation.

Summary:

This article introduces how to use Vue.js to achieve image masking and border animation effects, and provides corresponding code examples. Through these examples, we can flexibly apply these effects to our own website design to improve the visual effects and user experience of the web page.

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