PhantomJS - onPrompt()

This callback is called when a prompt is called by the webpage. It takes two arguments, message and the answer. The return value is a string.

Syntax

Its syntax is as follows −

wpage.onPrompt = function(msg, defaultVal) {}

Example

The following code shows the use of onPrompt() method.

var wpage = require('webpage').create(); 
wpage.onPrompt = function(msg, answer) { 
   console.log("Entering in onPrompt callback"); 
   console.log(msg); 
   return answer; 
} 
wpage.open('http://localhost/tasks/prompt.html', function(status) { 
   console.log(status);  
});

prompt.html

<html> 
   <head> 
      <title>Welcome to phantomjs</title> 
   </head> 
   
   <body> 
      <script type = "text/javascript"> 
         window.onload = function() { 
            prompt("Is the page loaded", ""); 
         } 
      </script> 
      <h1>This is a test page</h1> 
   </body> 
   
</html>

The above program generates the following output.

Entering in onPrompt callback
Is the page loaded
Success

phantomjs_webpage_module_events_callbacks.htm