In JavaScript, focus means "focus". The focus() method can be used to set focus for an element, and the syntax is "HTMLElementObject.focus()".
The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.
The focus() method is used to set focus for an element (if it can be set).
Tip: Use the blur() method to remove element focus.
The syntax is:
HTMLElementObject.focus()
The example is as follows:
<!DOCTYPE html>
<html>
<head>
<style>
a:focus, a:active {
color: green;
}
</style>
</head>
<body>
<a id="myAnchor" href="//www.php.cn">获取焦点</a>
<p>点击按钮设置或移除以上链接的焦点。</p>
<input type="button" onclick="getfocus()" value="获取焦点">
<input type="button" onclick="losefocus()" value="移除焦点">
<script>
function getfocus() {
document.getElementById("myAnchor").focus();
}
function losefocus() {
document.getElementById("myAnchor").blur();
}
</script>
</body>
</html>Output result:
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