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JavaScript Interactive Web Pages with JavaScript Selecting Elements and Adding Events with JavaScript Adding Events

Elizabeth Hammock
Elizabeth Hammock
6,674 Points

After line 4 in the app.js file, assign the greeting event handler to the click event on the sayButton.

Not sure why this is not correct.

app.js
var sayButton = document.getElementById("say");
var greeting = function() {
  alert("Hello World!");
}
greeting=sayButton;
index.html
<!DOCTYPE html>
<html>
<head></head>
<body>
<button id="say">Say "Hello World!"</button>
<script src="app.js"></script>
</body>
</html>

3 Answers

cm21
cm21
150,854 Points

When I entered your code, I got this error: "Bummer! Use the onclick property on the button and assign it the greeting function. Don't use ()." Here's what that would look like:

var sayButton = document.getElementById("say");
var greeting = function() {
  alert("Hello World!");
}
sayButton.onclick = greeting;

Additional explanation: You would need to use the 'dot' syntax in which you specify the button first and then the property of that button. sayButton is the button (rather than greeting, which is a method defined in your code), and that's what the property needs to be used on.

Viardiny Mathieu
Viardiny Mathieu
8,114 Points

I wrote the same answer sayButton.onClick = greeting; and yet it's giving me the same error you got "Bummer!" Use....

Jooyeon Song
Jooyeon Song
8,932 Points

Viardiny Mathieu. You should use a small letter :)

Bonnie Martin
Bonnie Martin
13,671 Points

Treehouse guys, can we fix this kind of thing? The course tells us that onClick is the proper way of doing this, so when I use that and it tells me I'm wrong, that doesn't make any sense. It's really frustrating.