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Herkus rašė:
> super, aciu!

Na ir ateičiai, sudėtingesniais atvejais, kai public API lengvai
neprieinamas:

phantomjs:
http://phantomjs.org/


> cat temp.js
var page = require('webpage').create();
page.open('https://www.windguru.cz/station/244', function(status) {
  if(status !== "success") {
	console.log('Unable to access network');
	phantom.exit(1);
  }
});


function waitFor(testFx, onReady, timeOutMillis) {
    var maxtimeOutMillis = timeOutMillis ? timeOutMillis : 3000, //<
Default Max Timout is 3s
        start = new Date().getTime(),
        condition = false,
        interval = setInterval(function() {
            if ( (new Date().getTime() - start < maxtimeOutMillis) &&
!condition ) {
                // If not time-out yet and condition not yet fulfilled
                condition = (typeof(testFx) === "string" ?
eval(testFx) : testFx()); //< defensive code
            } else {
                if(!condition) {
                    // If condition still not fulfilled (timeout but
condition is 'false')
                    console.log("'waitFor()' timeout");
                    phantom.exit(1);
                } else {
                    // Condition fulfilled (timeout and/or condition
is 'true')
                    //console.log("'waitFor()' finished in " + (new
Date().getTime() - start) + "ms.");
                    typeof(onReady) === "string" ? eval(onReady) :
onReady(condition); //< Do what it's supposed to do once the condition
is fulfilled
                    clearInterval(interval); //< Stop this interval
                }
            }
        }, 250); //< repeat check every 250ms
};

page.onLoadFinished = function() {
	waitFor(function() {
    	// Check in the page if a specific element is now visible
	    return page.evaluate(function() {
    	    return
document.getElementsByClassName('wgs_temp_value')[0].textContent;
        	});
        }, function(condition) {
	        console.log("Temp: " + condition);
    	    phantom.exit();
	});
};


> phantomjs temp.js
Temp: -5.4


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