如何检测滚动事件在iframe中? [英] javascript-How to detect scroll event in iframe?
问题描述
我尝试使用iframe tage添加事件滚动时出现问题。一般来说,我用div标签使用滚动事件它运行良好。但是当我在iframe标签中添加滚动事件来检测用户滚动pdf页面时,它不起作用。为什么我不能访问iframe中的html元素?,我有代码检查如下:
,我尝试使用iframe添加JavaScript滚动事件: b HTML代码
< iframe id =myframesrc =doc.pdf >< / iframe>
:
$ b
document.getElementById('myframe')。onscroll = function(){alert(滚动页面');};
JavaScript为我们提供 onscroll 作为传递参数的属性(可以是函数)。但是我们在这里获得了iframe,请尝试下面的代码片段(jQuery)。
$(#yourFrameId)。load (){
var iframe = $(#yourFrameId)。contents();
$ b $(iframe).scroll(function(){
// your code here
});
});
I have a problem when I try add event scroll with iframe tage. generally, I use scroll event with div tag It was working well. but when I add scroll event in iframe tag to detect user scroll pdf page, It was not working. why cannot I access html elements in iframe?, I have code inspect below:
and I try to add javascript scroll event with iframe :
HTML Code:
<iframe id="myframe" src="doc.pdf"></iframe>
JavaScript Code:
document.getElementById('myframe').onscroll = function(){
alert('scrolling page');
};
JavaScript provide us onscroll as an attribute which passes parameters (Can be a function). But we got iframe here, try the following code snippet (jQuery).
$("#yourFrameId").load(function () {
var iframe = $("#yourFrameId").contents();
$(iframe).scroll(function () {
//your code here
});
});
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