1-4 absolute的包裹性

absolute的包裹性

absolute的包裹性

任务

老师视频里的不同布局写法，不是习题！！不是习题！！！

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>absolute的包裹性</title>
<style>
.box {
    padding: 10px;
    background-color: #f0f0f0;    
}
input {
    position: absolute; top: 234px;    
    width: 160px; height: 32px;
    font-size: 100%;
}
</style>
</head>

<body>
<div id="box" class="box"><img src="http://img.mukewang.com/54447b06000171a002560191.jpg" width="256" height="191"></div>
<input id="button" type="button" value="容器absolute化">
<script>
var eleBox = document.getElementById("box"), eleBtn = document.getElementById("button");
if (eleBox != null && eleBtn != null) {
    eleBtn.onclick = function() {
        if (this.absolute) {
            eleBox.style.position = "";
            this.value = "容器absolute化";
            this.absolute = false;
        } else {
            eleBox.style.position = "absolute";
            this.value = "容器去absolute";
            this.absolute = true;
        }
    };
}
</script>
</body>
</html>

 

posted @ 2017-11-21 15:58  罪恩徒斯  阅读(115)  评论(0)    收藏  举报