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();