JavaScript Code复制内容到剪贴板
function browerKernel(){
var result;
[‘webkit’, ‘moz’, ‘o’, ‘ms’].forEach(function(prefix){
if( typeof document[ prefix + ‘Hidden’ ] != ‘undefined’ ){
result = prefix;
}
});
return result;
}
function init(){
prefix = browerKernel();
var showTip = document.getElementById(‘showTip’);
document.addEventListener( prefix + ‘visibilitychange’, function onVisibilityChange(e){
var tip = null;
if( document[ prefix + ‘VisibilityState’ ] == ‘hidden’ ) tip = ‘<p>离开页面</p>’;
else if( document[ prefix + ‘VisibilityState’ ] == ‘visible’ ) tip = ‘<p>进入页面</p>’;
showTip.innerHTML = showTip.innerHTML + tip;
});
}
window.onload = init();
再再来看一个具体的例子,
JavaScript Code复制内容到剪贴板
<!DOCTYPE HTML>
<html>
<head>
<script type="text/javascript">
timer = 0;
function onLoad(){
