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Start your free trialMegan Markle
379 PointsTrouble understanding why we put 'weatherReport' as a parameter?
I understand the basics of a parameter, but I'm starting to think I don't. Isn't it later defined when you assign a value to it? That's why I don't understand the concept here. Can anyone explain how it works here?
Thanks
$(document).ready(function() {
var weatherAPI = 'http://api.openweathermap.org/data/2.5/weather';
var data = {
q : "Portland,OR",
units : "metric"
};
function showWeather(weatherReport) {
$("#temperature").text(weatherReport.main.temp);
};
});//End
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>What's the Weather Like?</title>
<script src="jquery.js"></script>
<script src="weather.js"></script>
</head>
<body>
<div id="main">
<h1>Current temperature: <span id="temperature"></span>°</h1>
</div>
</body>
</html>
1 Answer
Steven Parker
231,172 PointsA parameter acts as a placeholder for a value that will be supplied when the function is called.
This code is still incomplete, so it won't "work" as-is. The function is defined, but the code that will use it has not been added yet. Also, since this function will be used as a callback, you will not see where the actual call occurs, but you know from the API description that an argument will be supplied to it at that time.