不使用flash实现复制文字(图片)到剪贴板

<div>这里是待复制的文字或图片</div>

var range = document.createRange();

var referenceNode = document.getElementsByTagName("div")[0];

range.selectNode(referenceNode);

window.getSelection().addRange(range);

try {
　　var successful = document.execCommand('copy');  
　　var msg = successful ? 'successful' : 'failed';
　　console.log('Copy ' + msg);
} catch(err) {
　　console.log('Oops, unable to copy');  
　　clipboardData.setData('Text', "Some data");
}  

// Remove the selections - NOTE: Should use
// removeRange(range) when it is supported
window.getSelection().removeAllRanges();

如此一来就能省去了制作flash的麻烦。