最快捷迅速的做法

 1. vue中可以 自定义class类,同时允许存在v-bind:class指令来进行书写样式,这两者并不冲突,可以并存。
 2. 根据第一条,我们可以: class中书写必有的样式,然后用 :class搭配三元运算符进行动态样式判断
 3. 这个方法其实就是组件中 data   style  三元运算符的应用 好理解,易上手,极力推荐
<template>
  <div>
    <div class="grid-content" @mouseover="mouseOver" @mouseleave="mouseLeave">
      <div
        class="select_icon level_center"
        :class="active == true ? 'select_a' : 'select_b'"
      ></div>
      <div
        class="select_char level_center"
        :class="active == true ? 'select_charActive' : 'select_charNoactive'"
      >
        能力图谱
      </div>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      active: false,
    };
  },
  created() {},
  methods: {
    mouseOver() {
      this.active = true;
    },
    mouseLeave() {
      this.active = false;
    },
  },
  computed: {},
};
</script>
<style lang='less' scoped>
.grid-content {
  //使用gutter使其自适应了,高度关掉
  // width: 300px;
  height: 300px;
  background: #1b1f27;
  border: 1px solid #6c93e3;
  border-radius: 10px;
  position: relative;
  .select_icon {
    width: 165px;
    height: 144px;
    position: absolute;
    top: 48px;
    transition: background 1s linear;
  }
  .select_char {
    width: 259px;
    height: 40px;
    background: #272b35;
    border-radius: 20px;
    top: 239px;
    font-size: 24px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    text-align: center;
    line-height: 40px;
    transition: color 1s linear;
  }
  //变化后的样式
  .select_charNoactive {
    color: #8e9fa8;
  }
  .select_charActive {
    color: #67fff8;
  }
  .select_a {
    background: url("../assets/home/nenglitupu.png") no-repeat;
    background-size: 100% 100%;
  }
  .select_b {
    background: url("../assets/home/changjing.png") no-repeat;
    background-size: 100% 100%;
  }
}
</style>

vue中动态改变样式_vue

对象语法

 1.对象语法简单写一下,需要注意:对象里面多个样式的类,第二个需要用双引号括起来
 2.对象语法其实就是:组件中style部分于data部分的结合

下面代码仅仅是在说明一个方式,代码并不具备操作性

<template>
  <div>
    <div class="grid-content">
    //当 isActive 或者 hasError 变化时,class 列表将相应地更新。
    //例如,如果 hasError 的值为 true,class 列表将变为 "select_icon select_char select_charNoactive select_b"。
      <div
        class="select_icon select_char"
        :class="{ select_charNoactive: isActive, 'select_b': hasError }"
      ></div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      isActive: true,
      hasError: false
    };
  },
  created() {},
  methods: {
    mouseOver() {
      this.active = true;
    },
    mouseLeave() {
      this.active = false;
    },
  },
  computed: {},
};
</script>
<style lang='less' scoped>
  .select_icon {
    width: 165px;
    height: 144px;
    position: absolute;
    top: 48px;
    transition: background 1s linear;
  }
  .select_char {
    width: 259px;
    height: 40px;
    background: #272b35;
    border-radius: 20px;
    top: 239px;
    font-size: 24px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    text-align: center;
    line-height: 40px;
    transition: color 1s linear;
  }
  //变化后的样式
  .select_charNoactive {
    color: #8e9fa8;
  }
  .select_charActive {
    color: #67fff8;
  }
  .select_a {
    background: url("../assets/home/nenglitupu.png") no-repeat;
    background-size: 100% 100%;
  }
  .select_b {
    background: url("../assets/home/changjing.png") no-repeat;
    background-size: 100% 100%;
  }

</style>

数组语法

下面代码仅仅是在说明一个方式,代码并不具备操作性

 1.数组语法简单写一下
 2.数组语法其实就是:组件中style部分于data部分的结合,但是非常恶心的是他并不是非常的直接,样式的类名
 其实是写在数据中。(看代码吧)
 3. 如果你也想根据条件切换列表中的 class,可以用三元表达式:
 <div v-bind:class="[isActive ? activeClass : '', errorClass]"></div>
<template>
  <div v-bind:class="[activeClass, errorClass]"></div> 
</template>
<script>
export default {
data(){
    return {
    		  activeClass: 'active',
              errorClass: 'text-danger'
        }
    },
created() {
    },
methods: {
    },
computed: {
    }
}
</script>
<style lang='less' scoped>
 .active {
 	text-align: center;
    line-height: 40px;
    transition: color 1s linear;
 }
 .text-danger {
	text-align: center;
    line-height: 40px;
    transition: color 1s linear;
}
</style>
//最终渲染为 <div class="active text-danger"></div>