如果我传递参数，则不会调用javascript函数
[英]javascript function is not being called if i pass a argument
问题描述
the function setImg() if called with an argument is not running but if no argument is passed then the function runs what mi doing wrong please help. 
setImg（）函数（如果使用参数调用）未运行，但如果未传递参数，则该函数运行mi做错了的事情，请帮忙。
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<script type="text/javascript">
function setImg(p)
{
window.alert(p);
document.getElementById('img').innerHTML ="<img src=p width='100' height='105'>";
}
</script>
</head>
<body>
<a href="#" onclick="setImg("images/user-icon.png");">load image</a>
<div id="img">
</div>
</body>
</html>
3 个解决方案
解决方案1
1 2016-04-11 14:46:31
You are missing the quotes for the src plus you should break up the string and add the variable to prevent it reading p as text. 您缺少src的引号，还应该分解字符串并添加变量以防止其将p读为文本。
Update the JS to the following: 将JS更新为以下内容：
<script type="text/javascript">
function setImg(p)
{
document.getElementById('img').innerHTML ="<img src='" + p + "' width='100' height='105'>";
}
</script>
Plus in the HTML you need to be careful with quotes: 另外，在HTML中，您需要注意引号：
<a href="#" onclick="setImg('images/user-icon.png');">load image</a>
解决方案2
0 2016-04-11 14:44:39
Small mistake of quotes 小报价错误
change 更改
<a href="#" onclick="setImg("images/user-icon.png");">load image</a>
to 至
<a href="#" onclick="setImg('images/user-icon.png');">load image</a>
解决方案3
0 已采纳 2016-04-11 14:45:35
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<script type="text/javascript">
function setImg(p)
{
window.alert(p);
document.getElementById('img').innerHTML ="<img src=p width='100' height='105'>";
}
</script>
</head>
<body>
<a href="#" onclick="setImg('images/user-icon.png');">load image</a>
<div id="img">
</div>
</body>
</html>
Well your were closing html attribute accidentally, you should use ' single-quotes instead. 好吧，您不小心关闭了html属性，应该改用'单引号。
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