onload/iframe/set-src-dom-1.html

<!DOCTYPE html>
<html>
<head>
<title>&lt;iframe>.onload Event Handler DOM Attribute and src='' DOM Attribute
Setting</title>
</head>
<body onunload="document.getElementsByTagName ('iframe')[0].onload = null">
  <p><iframe src="about:blank">noiframe</iframe></p>
  <p><button type="button" onclick="
    var result = document.getElementById ('result');
    result.innerHTML = 'not invoked yet';
    var iframe = document.getElementsByTagName ('iframe')[0];
    iframe.onload = function () {
      if (iframe.src == 'http://www.w3.org/') {
        result.innerHTML = 'invoked';
      } else {
        result.innerHTML = 'invoked but src != http://www.w3.org/';
      }
    };
    iframe.src = 'http://www.w3.org/';
  ">Click this button!</button></p>
  <p id="result">not executed yet</p>
</body>
</html>
1	wakaba	1.1	<!DOCTYPE html>
2			<html>
3			<head>
4			<title><iframe>.onload Event Handler DOM Attribute and src='' DOM Attribute
5			Setting</title>
6			</head>
7			<body onunload="document.getElementsByTagName ('iframe')[0].onload = null">
8			<p><iframe src="about:blank">noiframe</iframe></p>
9			<p><button type="button" onclick="
10			var result = document.getElementById ('result');
11			result.innerHTML = 'not invoked yet';
12			var iframe = document.getElementsByTagName ('iframe')[0];
13			iframe.onload = function () {
14			if (iframe.src == 'http://www.w3.org/') {
15			result.innerHTML = 'invoked';
16			} else {
17			result.innerHTML = 'invoked but src != http://www.w3.org/';
18			}
19			};
20			iframe.src = 'http://www.w3.org/';
21			">Click this button!</button></p>
22			<p id="result">not executed yet</p>
23			</body>
24			</html>