How do I access an iframe from CasperJS?

javascript iframe webkit phantomjs casperjs

18,384

Solution 1

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();
});

Solution 2

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');
    });
  });

Solution 3

As a matter of fact you'll have to use the new --web-security=no feature provided by Phantomjs 1.5 in order to be able to access those iFrames and their contents.

Solution 4

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");
            }
      );
   });
});

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18,384

Author by

Jim Paris

Updated on June 05, 2022

Comments

Jim Paris about 2 years

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.