Posted in Javascript onNovember 19, 2013
源代码:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <meta name="Author" content=""> <title>内容筛选</title> <script type='text/javascript'> function getPositions() { var el = document.getElementById('shaixuan'); var startPosition = 0;//所选文本的开始位置 var endPosition = 0;//所选文本的结束位置 if(document.selection) { //IE var range = document.selection.createRange();//创建范围对象 var drange = range.duplicate();//克隆对象 drange.moveToElementText(el); //复制范围 drange.setEndPoint('EndToEnd', range); startPosition = drange.text.length - range.text.length; endPosition = startPosition + range.text.length; } else if(window.getSelection) { //Firefox,Chrome,Safari etc startPosition = el.selectionStart; endPosition = el.selectionEnd; } return { "start":startPosition, "end":endPosition } } //@todo 获取textarea中,选中的文本 function getshaixuan() { var position = getPositions(); var start = position.start;//开始位置 var end = position.end;//结束位置 var text = document.getElementById('shaixuan').value; var selectText = text.substr(start, (end - start));//textarea中,选中的文本 //alert(selectText); var textBox1 = document.getElementById("canjia"); textBox1.innerText=textBox1.value+selectText; } //]]> </script> <title>元素的复制</title> <style type="text/css"> <!-- body{ font-size:18px} p{border-style:none} .p1{ background-color:#FFFFFF;margin-top:60px;margin-bottom:3px;margin-left:200px;} .p2{ background-color:#FFFFFF;margin-top:2px;margin-bottom:3px;margin-left:150px;} .p3{ background-color:#FFFFFF;margin-top:1px;margin-bottom:3px;position:absolute;left:550px;top:60px} .p4{ background-color:#FFFFFF;margin-top:1px;margin-bottom:3px;position:absolute;left:500px;top:85px} .p5{ background-color:#FFFFFF;margin-top:1px;margin-bottom:3px;position:absolute;left:380px;top:190px} --> </style> </head> <body> <p class="p1">筛选名单</p> <textarea id="shaixuan" name="check" cols="23" rows="15" class="p2"></textarea> <div class="p3">参加名单</div> <textarea id="canjia" name="canjia" cols="23" rows="15" class="p4"></textarea> <input type="button" value="内容复制" class="p5" onclick="getshaixuan();"> <!--</textarea> <button onclick="getshaixuan()">获取内容</button>--> </body> </html>
实现效果:
JS简单实现元素复制示例附图
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