JS 添加DOM元素 删除DOM元素
创建一个DOM对象
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| document.createElement("标签名");
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DOM对象添加一个子DOM
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| dom.appendChild(subDOM);
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例如:
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| function add() {
var bodyDom = document.body;
var inputText = document.createElement("input");
inputText.value = '内容';
inputText.id = 'generatedDom';
bodyDom.appendChild(inputText);
}
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DOM删除一个子DOM
格式:
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| dom.removeChild(subDom);
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例如:
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| function remove() {
var bodyDom = document.body;
var inputText = document.getElementById("generatedDom");
bodyDom.removeChild(inputText);
}
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JS 复制到系统剪贴板
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| function copy(text) {
var temp = document.createElement("textarea");
temp.value = text;
document.body.appendChild(temp);
temp.select();
alert('打断,看效果');
document.execCommand('copy');
document.body.removeChild(temp);
}
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完整例子
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| <html>
<head>
<meta charset="utf-8">
<style type="text/css">
</style>
<script>
function add() {
var bodyDom = document.body;
var inputText = document.createElement("input");
inputText.value = '内容';
inputText.id = 'generatedDom';
bodyDom.appendChild(inputText);
}
function remove() {
var bodyDom = document.body;
var inputText = document.getElementById("generatedDom");
bodyDom.removeChild(inputText);
}
function copy(text) {
var temp = document.createElement("textarea");
temp.value = text;
document.body.appendChild(temp);
temp.select();
alert('打断,看效果');
document.execCommand('copy');
document.body.removeChild(temp);
}
</script>
</head>
<body>
<textarea cols="100" rows="10" style="display: block;"></textarea>
<button onclick="add()">添加元素</button>
<button onclick="remove()">移除元素</button>
<button onclick="copy('通过复制的到的内容')">复制元素</button>
</body>
</html>
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