vue绑定属性、绑定class及绑定style

1.绑定属性  v-bind 或者 ： 例如：<img :src="pic_src" />

<template>
  <div id="app">
    <img :src="pic_src" />
  </div>
</template>

<script>
export default {
  name: "app",
  data() {
    return {
      pic_src: "https://cn.vuejs.org/images/logo.png",
      
    };
  }
};
</script>

<style>
</style>

 2.绑定class <div :class="{'red':active}">111111111111</div>

<template>
  <div id="app">
    <img :src="pic_src" />
    <hr/>
    <div :class="{'red':active}">111111111111</div>
  </div>
</template>

<script>
export default {
  name: "app",
  data() {
    return {
      pic_src: "https://cn.vuejs.org/images/logo.png",
      active: true
    };
  }
};
</script>

<style>
.red {
  color: red;
}
</style>

3.绑定style  <div :style="{color:color}">2222222222</div>

<template>
  <div id="app">
    <img :src="pic_src" />
    <hr/>
    <div :class="{'red':active}">111111111111</div>
    <hr/>
    <div :style="{color:color}">2222222222</div>
  </div>
</template>

<script>
export default {
  name: "app",
  data() {
    return {
      pic_src: "https://cn.vuejs.org/images/logo.png",
      active: true,
      color:'blue'
    };
  }
};
</script>

<style>
.red {
  color: red;
}
</style>

最终页面效果：