我需要在html页面中显示/隐藏图像.我觉得很简单.但为什么我得到错误'可见'未定义.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
<html xmlns="http://www.w3.org/1999/xhtml">
<head><title>Ajax Test
</title>
<script type="text/javascript">
<!--
function showImage(){
document.getElementById('loadingImage').style.visibility=visible;
}
-->
</script>
</head>
<body>
<input type="button" value="Ajax Button" onclick="showImage();"/>
<img id="loadingImage" src="ajax-loader.gif" style="visibility:hidden"/>
</body>
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Dav*_*d M 16
你需要把它放在引号中 - 它是一个字符串:
document.getElementById('loadingImage').style.visibility='visible';
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