標籤：文檔 oct charset cti asc element meta function .com
由胖變瘦再由瘦變胖來回迴圈：
<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>無標題文檔</title><script type="text/javascript"> function func(){var img=document.getElementById("ad");//img.src="2.jpg";var str=img.src;//alert(img.src);//alert(img.src.indexOf("1.jpg"));if(str.indexOf("1.jpg")>=0){img.src="2.jpg";}else{img.src="1.jpg";}}</script></head><body> <span><img src="1.jpg" id="ad"></span> <button onClick="func()">點擊變瘦</button></body></html>
運行結果：
點擊變瘦：
再點擊變瘦就又回到開始的樣子以此迴圈
JS變瘦
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