This article will introduce to you how to use JavaScript to implement the "select all" and "unselect all" functions. The article introduces it in detail through sample code. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.
The code is as follows
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<script>
function clickon() {
// 获取到body中所有checkbox
var checkbox = document.querySelectorAll("input[type='checkbox']");
for (var i = 0; i < checkbox.length; i++) {
checkbox[i].checked = true;
}
}
function unclick() {
var checkbox = document.querySelectorAll("input[type='checkbox']");
for (var i = 0; i < checkbox.length; i++) {
checkbox[i].checked = false;
}
}
</script>
<body>
<form>
<input type="checkbox">吃
<input type="checkbox">喝
<input type="checkbox">拉
<input type="checkbox">撒
<input type="button" value="全选" onclick="clickon()">
<input type="button" value="全不选" onclick="unclick()">
</form>
</body>
</html>Effect
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