HTML
CSS
JavaScript
HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>IT书包</title>
</head>
<body>

<div class="demo_box transition_property_1">变换所有的属性</div>
<div class="demo_box transition_property_2">不变换任何属性</div>
<div class="demo_box transition_property_3">只变换宽度属性</div>

</body>
</html>
CSS
.demo_box {
    border: 1px solid #3DA5DC;
    background: #a4dcf9;
    height: 100px;
    width: 200px;
    text-align: center;
    color: #fff;
}
.transition_property_1{
    -webkit-transition:0.5s ease;
    -moz-transition:0.5s ease;
    -webkit-transition-property:all;
    -moz-transition-property:all;
    position:absolute;
    left:10px;
    top:50px;
}
.transition_property_2{
    -webkit-transition:0.5s ease;
    -moz-transition:0.5s ease;
    -webkit-transition-property:none;
    -moz-transition-property:none;
    position:absolute;
    left:250px;
    top:50px;
}
.transition_property_3{
    -webkit-transition:0.5s ease;
    -moz-transition:0.5s ease;
    -webkit-transition-property:width;
    -moz-transition-property:width;
    position:absolute;
    left:480px;
    top:50px;
}

.transition_property_1:hover,
.transition_property_2:hover,
.transition_property_3:hover{
    width:500px;
    height:300px;
}
JavaScript