1 2 var zindex = 20;3 4 function add() {5 var frame = document.getElementById('frame');6 7 var item = document.createElement('div');8 item.className = 'item preadd';9 10 var image = document.createElement('div');11 image.className = 'image';12 image.style.zIndex = zindex;13 item.appendChild(image);14 15 zindex++;16 17 if (null == frame.firstChild) {18 frame.appendChild(item);19 } else {20 frame.insertBefore(item, frame.firstChild);21 }22 23 setTimeout(function(){24 item.className = 'item'; 25 }, 100);26 27 }Enlace
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