evaluateAsync
evaluateAsync(function, [delayMillis, arg1, arg2, ...]) {void}
Evaluates the given function in the context of the web page, without blocking the current execution. The function returns immediately and there is no return value. This is useful to run some script asynchronously.
The second argument indicates the time (in milliseconds) before the function should execute. The remaining arguments are passed to the function, as with evaluate. You must specify a delay (which can be 0) if you want to pass in any arguments.
Examples
Asynchronous AJAX
var webPage = require('webpage');
var page = webPage.create();
page.open("", function(status) {
page.includeJs("http://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js", function() {
page.evaluateAsync(function() {
$.ajax({url: "api1", success: function() {}});
});
page.evaluateAsync(function(apiUrl) {
$.ajax({url: apiUrl, success: function() {}});
}, 1000, "api2");
});
});