我有一个带iframe的网页.我想使用CasperJS访问iframe的内容.特别是,我需要单击按钮并填写表单.我怎样才能做到这一点？
主要网页是 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>
iframe是:
<html><body>
<a id='iframe-c' href="javascript:console.log('pressed iframe-c');">iframe-c</a>
</body></html>
我天真的做法:
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();
});
当然,这不起作用,因为a#iframe-c选择器在主框架中无效:
[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] …