How do I access an iframe from CasperJS?
Question
I have a webpage with an iframe. I'd like to access the contents of the iframe using CasperJS . In particular, I need to click buttons and fill a form. How can I do that?
The main webpage is main.html :
<html><body>
<a id='main-a' href="javascript:console.log('pressed main-a');">main-a</a>
<iframe src="iframe.html"></iframe>
<a id='main-b' href="javascript:console.log('pressed main-b');">main-b</a>
</body></html>
The iframe is:
<html><body>
<a id='iframe-c' href="javascript:console.log('pressed iframe-c');">iframe-c</a>
</body></html>
My naïve approach:
var casper = require('casper').create({
verbose: true,
logLevel: "debug"
});
casper.start("http://jim.sh/~jim/tmp/casper/main.html", function() {
this.click('a#main-a');
this.click('a#main-b');
this.click('a#iframe-c');
});
casper.run(function() {
this.exit();
});
Doesn't work, of course, because the a#iframe-c selector isn't valid in the main frame:
[info] [phantom] Starting...
[info] [phantom] Running suite: 2 steps
[debug] [phantom] opening url: http://jim.sh/~jim/tmp/casper/main.html, HTTP GET
[debug] [phantom] Navigation requested: url=http://jim.sh/~jim/tmp/casper/main.html, type=Other, lock=true, isMainFrame=true
[debug] [phantom] url changed to "http://jim.sh/~jim/tmp/casper/main.html"
[debug] [phantom] Navigation requested: url=http://jim.sh/~jim/tmp/casper/iframe.html, type=Other, lock=true, isMainFrame=false
[debug] [phantom] Successfully injected Casper client-side utilities
[info] [phantom] Step 2/2 http://jim.sh/~jim/tmp/casper/main.html (HTTP 200)
[debug] [phantom] Mouse event 'click' on selector: a#main-a
[info] [remote] pressed main-a
[debug] [phantom] Mouse event 'click' on selector: a#main-b
[info] [remote] pressed main-b
[debug] [phantom] Mouse event 'click' on selector: a#iframe-c
FAIL CasperError: Cannot dispatch click event on nonexistent selector: a#iframe-c
# type: uncaughtError
# error: "CasperError: Cannot dispatch click event on nonexistent selector: a#iframe-c"
CasperError: Cannot dispatch click event on nonexistent selector: a#iframe-c
/tmp:901 in mouseEvent
/tmp:365 in click
/tmp/test.js:9
/tmp:1103 in runStep
/tmp:324 in checkStep
Is there any way to make this work? A hack that involves poking into phantomjs directly would be fine, but I don't know what to do there.
I'm using CasperJS version 1.0.0-RC1 and phantomjs version 1.6.0.
5 answers
solution1
41 ACCPTED 2012-08-27 22:12:22
Spent forever looking for this, and of course I found the answer minutes after posting the question.
I can use the new frame switching commands added to phantomjs in this commit . Specifically, the this.page.switchToChildFrame(0) and this.page.switchToParentFrame() functions. It appears undocumented, and it also seems that the methods have been changed for upcoming releases, but it does work:
var casper = require('casper').create({
verbose: true,
logLevel: "debug"
});
casper.start("http://jim.sh/~jim/tmp/casper/main.html", function() {
this.click('a#main-a');
this.click('a#main-b');
this.page.switchToChildFrame(0);
this.click('a#iframe-c');
this.page.switchToParentFrame();
});
casper.run(function() {
this.exit();
});
solution2
35 2013-01-04 09:16:58
From 1.0 you can use withFrame
casper.open("http://www.example.com/page.html", function() {
casper.withFrame('flashHolder', function() {
this.test.assertSelectorExists('#the-flash-thing', 'Should show Flash');
});
});
solution3
4 2012-08-27 22:02:08
实际上，您必须使用Phantomjs 1.5提供的新--web-security=no功能，才能访问这些iFrames及其内容。
solution4
3 2015-10-28 13:28:49
Suppose we have different frames(frame1 and frame2) and we have to access different elements(like click or check if div tag exits or not) of those frames.
casper.withFrame('frame1', function() {
var file = '//*[@id="profile_file"]';
casper.thenClick(x(file));
});
casper.withFrame('frame2', function() {
casper.then(function () {
casper.waitForSelector('#pageDIV',
function pass() {
console.log("pass");
},
function fail(){
console.log("fail");
}
);
});
});
solution5
0 2018-04-04 09:14:59
You can do something like this:
casper.start("url here...", function() {
this.withFrame(0, function() {
this.evaluate(function() {
document.querySelector('img#btn_start').click();
})
})
});
You can replace the zero with the name of the iframe.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.