PhantomJS passing variable to page.open

Question

I need to capture an URL on one page and then open the target. What's the most elegant solution? The code below doesn't work, because the variable url is basically local.

function() {
  page.open("https://www.google.com/blah");
},
function() {
  page.evaluate(function() {
    var url=document.getElementById('link42')[0]; //URL captured
  });
},
//opening the target 
function() {
  page.open(url);
},
function() {
  page.evaluate(function() {
    console.log(document.querySelectorAll('html')[0].outerHTML);
  });
}

Artjom B. · Accepted Answer · 2014-07-21 06:25:19Z

1

You can probably make it global. You just have to mind how you get the url out of the page context. It is not possible to return DOM elements, but you can return everything that is JSON serializable.

Quote from page.evaluate:

Note: The arguments and the return value to the evaluate function must be a simple primitive object. The rule of thumb: if it can be serialized via JSON, then it is fine.

var url;

// function chainer
function() {
  page.open("https://www.google.com/blah");
},
function() {
  url = page.evaluate(function() {
    return document.getElementById('link42').href; // href captured
  });
},
//opening the target 
function() {
  page.open(url);
}

getElementById only returns a single element, so you can't use [0].

edited Jul 21, 2014 at 6:25

answered Jul 19, 2014 at 17:42

Artjom B.

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