如何在Vue.js3上的按鈕上添加懸停效果？

我正在構建一個計算器來幫助練習學習 Vue.js 3（我是 vue 新手）。我已經完成了基本功能，但我試圖弄清楚如何在按鈕上添加懸停影片。如果可能的話，我會嘗試在白色按鈕和橙色按鈕之間制作不同的懸停顏色。任何幫助，將不勝感激

代碼：

  <div class="calculator">
  <div class="display">{{ current || '0'}}</div>
  <div @click="clear" class="btn">C</div>
  <div @click="sign" class="btn"> /-</div>
  <div @click="percent" class="btn">%</div>
  <div @click="divide" class="operator">÷</div>
  <div @click="append('7')" class="btn">7</div>
  <div @click="append('8')" class="btn">8</div>
  <div @click="append('9')" class="btn">9</div>
  <div @click="multiply" class="operator">x</div>
  <div @click="append('4')" class="btn">4</div>
  <div @click="append('5')" class="btn">5</div>
  <div @click="append('6')" class="btn">6</div>
  <div @click="minus" class="operator">-</div>
  <div @click="append('1')" class="btn">1</div>
  <div @click="append('2')" class="btn">2</div>
  <div @click="append('3')" class="btn">3</div>
  <div @click="plus" class="operator"> </div>
  <div @click="append('0')" class="zero">0</div>
  <div @click="dot" class="btn">.</div>
  <div @click="equal" class="operator">=</div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      previous: null,
      current: '',
      operator: null,
      operatorClicked: false,
      hover: false
    }
  },

  methods: {
    clear() {
      this.current = '';
    },

    sign() {
      this.current = this.current.charAt(0) === '-' ?
      this.current.slice(1) : `-${this.current}`;
    },

    percent() {
      this.current = `${parseFloat(this.current) / 100}`;
    },

    append(number) {
      if (this.operatorClicked) {
        this.current = '';
        this.operatorClicked = false;
      }
      this.current = `${this.current}${number}`;
    },

    dot() {
      if (this.current.indexOf('.') === -1) {
      this.append('.')
      }
    },

    setPrevious() {
      this.previous = this.current;
      this.operatorClicked = true;
    },

    plus() {
      this.operator = (a,b) => a   b;
      this.setPrevious();
    },

     minus() {
      this.operator = (a,b) => a - b;
      this.setPrevious();
    },

     multiply() {
      this.operator = (a,b) => a * b;
      this.setPrevious();
    },

     divide() {
      this.operator = (a,b) => a / b;
      this.setPrevious();
    },

     equal() {
      this.current = `${this.operator(
      parseFloat(this.current),
      parseFloat(this.previous)
      )}`;  
      this.previous = null;
    }
  }
}
</script>

<style scoped>
.calculator {
  margin: 0 auto;
  width: 400px;
  font-size: 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: minmax(50px, auto);
}

.display {
  grid-column: 1 / 5;
  background-color: black;
  color: white;
}

.zero {
  grid-column: 1 / 3;
  border: 1px solid black;
}

.btn {
  background-color: white;
  border: 1px solid black;
}

.operator {
  background-color: orange;
  color: white;
  border: 1px solid black;
}
</style>

uj5u.com熱心網友回復：

您可以使用:hover選擇器偽類，無需為此涉及 js/vue

IE：

.btn:hover {
  background-color: peach;
}
.operator:hover {
  background-color: lavender;
}

uj5u.com熱心網友回復：

是的，只需將滑鼠懸停在 btns 上即可實作，無需 vue 或 js

.btn:hover {
   background-color: #cac8c3;
 }
.operator:hover {
   background-color: #6f4d00;
 }

此代碼筆中的示例https://codepen.io/JavierSR/pen/LYQdjwY

標籤：javascript Vue.js Vuejs3

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