2019-06-05 Ready-five js点击一个按钮让b
2019-06-05 本文已影响0人
lao老麻
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<button>点击</button>
<script>
let btn = document.getElementsByTagName("button")[0];
let blu=true
btn.onclick = function () {
if (blu) {
document.body.style.backgroundColor = "red"
blu=false
} else {
document.body.style.backgroundColor = "white"
blu=true
}
}
</script>
</body>
</html>
