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

assign event handler

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

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

2 Answers

Luis Ancheta
Luis Ancheta
6,435 Points

All you have to do is assign the event handler ".onclick" to the "sayButton", so when the button is pressed your function gets executed. Your function in this case is stored in the variable greeting. Consider doing something like this:

sayButton.onclick = greeting;
Shawn Boyd
Shawn Boyd
14,345 Points

Do you have a specific question about this?

The challenge is focusing on the 'onclick' click event. The general syntax being:

object.onclick=function(){myScript};

Since you already have a named function written, that makes it even easier.

Tommy Gebru
Tommy Gebru
30,164 Points

element.on*event*=functionName;