用javascript隐藏html中的img [英] hidden a img in html with javascript
本文介绍了用javascript隐藏html中的img的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
亲爱的
我想隐藏我的照片但不能,
我的代码是:
hi dears
i want hidden my picture but cant,
my code is:
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title></title>
<script type="text/javascript">
function check()
{
if(true)
{
myform.img.style.visibility=hidden;
}
}
</script>
</head>
<body>
<form name="myform" method="get" action="">
<img src="IMAG0184.jpg" name="img" id="img" height="100" width="100" onclick="alert('hi')" align="right" >
<input type=text name=mytxt onchange="check()">
<br>
<br>
<input type="submit" name="ok" id="ok" onclick="check()"/>
</form>
</body>
</html>
推荐答案
var image = document.getElementById('img');
image.style.visibility="hidden";
由于页面生命周期的行为,以上解决方案将适用于文本更改事件,但不适用于按钮提交单击.解决方法是添加return false;否则返回false.在按钮上提交单击以防止回发.
The above solution will work on text change event but not on button submit click because of the page life cycle behavior. The work around is to add return false; on button submit click to prevent post back.
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title></title>
<script type="text/javascript">
function check() {
if (true) {
// myform.img.style.display = 'hidden';
document.getElementById("img").style.visibility = "hidden";
}
}
</script>
</head>
<body>
<form name="myform" method="get" action="">
<img src="IMAG0184.jpg" name="img" id="img" height="100" width="100" önclick="alert('hi')" align="right">
<input type=text name=mytxt onchange="check()"/>
<br>
<br>
<input type="submit" name="ok" id="ok" onclick="check();return false;"/>
</form>
</body>
</html>
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