<p>点击按钮,在等待 3 秒后弹出 "Hello"。</p><button onclick="myFunction()">点我</button><script>function myFunction() { setTimeout(function(){alert("Hello")},3000);}</script>
JavaScript 阅读(680) 阅读全文<p>点击按钮,在等待 3 秒后弹出 "Hello"。</p><button onclick="myFunction()">点我</button><script>function myFunction() { setTimeout(function(){alert("Hello")},3000);}</script>
JavaScript 阅读(680) 阅读全文