<html>
<head>
<title>test</title>
<script type="text/javascript">
function start(){
document.getElementById("first_div").onclick = function(){
document.getElementById("another_div").style.color = "red";
};
}
</script>
</head>
<body onload="start()">
<div id="first_div">first</div>
<div id="anoter_div">second</div>
</body>
</html>
when I click on the first_div, an error occurred:
TypeError: Result of expression 'document.getElementById("another_div")' [null] is not an object.
Any idea why this is not working?
th开发者_如何学运维ank you.
You've made a typo. Change:
document.getElementById("another_div")
^
To:
document.getElementById("anoter_div")
Or you could change the name of your div, which is probably better:
<div id="anoter_div">second</div>
<div id="another_div">second</div>
^
The method document.getElementById(..) isn't able to find the element and returns null, which explains the error you're getting.
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
加载中,请稍侯......
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