<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
选择图片:
<input type="file" id="img">
<br/>
<button id="start">开始转换</button>
<div>
预览:<img id="imgShow" src="" alt="">
</div>
<b>Base64数据:</b>
<textarea rows=15 cols=60 id="conte"></textarea>
<button id='cpData'>复制</button><span id="succ"></span>
<div id="len">数据长度:</div>
<script> var img = document.getElementById('img') , imgShow = document.getElementById('imgShow') , conte = document.getElementById('conte') , len = document.getElementById('len') , start = document.getElementById('start') , cpData = document.getElementById('cpData'); cpData.addEventListener('click', cpDataF); start.addEventListener('click', startt); /*转换函数*/ function startt() { var imgFile = new FileReader(); imgFile.readAsDataURL(img.files[0]); imgFile.onload = function () { var imgData = this.result; //base64数据 imgShow.setAttribute('src', imgData); conte.value = imgData; len.innerHTML += imgData.length; } } /*复制数据*/ function cpDataF() { conte.select(); // 选择对象 var cpd=document.execCommand("Copy"); // 执行浏览器复制命令 cpd ? document.getElementById('succ').innerHTML = '复制成功' : console.warn('复制失败'); window.setTimeout(function () { document.getElementById('succ').innerHTML = ''; }, 1000) } </script>
</body>
</html>
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