tryjs_intro_event 在线代码实例

 <h1>My First JavaScript</h1>

<p id="demo">
JavaScript can react to events. Like the click of a button.
</p>

<script>
function myFunction()
{
document.getElementById("demo").innerHTML="Hello JavaScript!";
}
</script>

<button type="button" onclick="myFunction()">Click Me!</button>