源码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="vue.js"></script>

</head>
<body>
<div id="app">
    <div
            class="test"
            v-bind:class="{active:isActive,green:isGreen}"
            style="width: 200px; height: 200px;text-align: center;line-height: 200px">
        hi vue
    </div>
    <div :style="{color:color,fontSize:size,background:isRed?'#ff0000':''}">
        hi vue2
    </div>
</div>
<script>
    var vm = new Vue({
        el: "#app",
        data: {
            isActive: true,
            isGreen: true,
            color: "#ffffff",
            size: '50px',
            isRed: true
        }
    });
</script>
<style>
    .active {
        background: #ff0000;
    }

    .test {
        font-size: 30px;
    }

    .green {
        color: chartreuse;
    }
</style>
</body>
</html>

vue class 与style绑定 v-bind_javascript

 这个active的属性有没有生效取决于  


isActive 变量


修改为false的时候就不显示了

vue class 与style绑定 v-bind_javascript_02