我有以下的html和javascript。如果我點擊模擬事件,我希望HandleEvents函數將文本發佈到「子」頁面html中。所以我基本上試圖鎖定到一個父元素的子網頁內的HTML元素。如何訪問iframe元素
我該怎麼做?
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<script type="text/javascript">
function _bindEvent(el, eventName, eventHandler) {
if (el.addEventListener){
el.addEventListener(eventName, eventHandler, false);
} else if (el.attachEvent){
el.attachEvent('on'+eventName, eventHandler);
}
}
function doconfigure() {
var ifrm = document.getElementById('ifrm');
if(ifrm) {
ifrm.src="configure.html";
}
}
function doevents() {
var ifrm = document.getElementById('ifrm');
if(ifrm) {
ifrm.src="show_events.html";
}
}
function dooutbound() {
var ifrm = document.getElementById('ifrm');
if(ifrm) {
ifrm.src="outbound.html";
}
}
function HandleEvents(data) {
//post data to show_events.html page
var ifrm = document.getElementById('ifrm');
if(ifrm) {
ifrm.src="show_events.html";
}
//post to events field
var elem = top.frames['display'].document.getElementById('event');
if(elem) {
elem.innerHTML = data;
}
}
</script>
<title></title>
</head>
<body>
<fieldset>
<legend>Select</legend>
<input type="button" value="Configure" onclick="doconfigure();">
<input type="button" value="Events" onclick="doevents();">
<input type="button" value="Outbound" onclick="dooutbound();">
<input type="button" value="simulate event" onclick="HandleEvents('my event');">
<br />
</fieldset>
<iframe src="configure.html" name="display" id="ifrm" height="700" width="800">
<p>Your browser does not support iframes.</p>
</iframe>
</body>
</html>
然後show_events.html頁:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title></title>
</head>
<body>
<p>Events:</p>
<p id="event"></p>
</body>
</html>
你必須等待,直到幀[滿載](http://stackoverflow.com/questions/1463581/waiting-for-an-iframe-to-在傳遞信息之前加載),然後才能訪問元素。 – epascarello