将事件处理程序添加到iframe以在keyup上调用 [英] Adding event handler to iframe to invoke on keyup
问题描述
在网页上我有iframe,我在其中显示了一些内容。
如果在iframe中按下了任何键,我想运行一个函数(iframe是可编辑的)。
On the webpage I have iframe, in which I display some content.
I want to run a function if any key is pressed inside iframe (iframe is editable).
我可以使用ajax(页面上有scriptmanager)来实现:
I can do it using ajax (with scriptmanager on page):
Sys.UI.DomEvent.addHandler(document.getElementById('iframe1').contentWindow.document, 'keyup', iframeKeyHandler);
但我想在没有ajax的情况下这样做!
But I want to do it without ajax!
更新代码:
function Init() {
document.getElementById('iView').contentWindow.document.designMode = "on";
document.getElementById('iView').contentWindow.document.onkeyup = function(event) {
alert(event);
}
}
<body onload="Init()" >
<iframe id="iView" style="width: 434px; height:371px" ></iframe>
</body>
推荐答案
我想你的意思是不使用脚本就行经理?
I guess you meant "do it without using the script manager"?
你可以这样做(使用 attactEvent / addEventListener ):
You can do it this way (use attactEvent/addEventListener):
<html>
<head>
<script type="text/javascript">
function Init() {
var _win = document.getElementById("iView").contentWindow;
var _doc = _win.document;
_doc.designMode = "on";
if(_doc.addEventListener) {// if support addEventListener
_doc.addEventListener("keyup", frameKeyUp, true)
}
else { //For IE
_doc.attachEvent("onkeyup", frameKeyUp);
}
}
function frameKeyUp(e){
alert(e.keyCode);
}
</script>
</head>
<body onload="Init()" >
<iframe id="iView" style="width: 434px; height:371px"></iframe>
</body>
</html>
或者使用jQuery的 keyup 的nofollow noreferrer>事件处理程序:
Or using jQuery's event handler for "keyup":
$('#iframe1').keyup(function(event){
//... do your stuff here ..
//use event.keyCode to get the asscoiated key
});
More info on keyboard event arg can be found here and here.
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