等待

Question

我试图让脚本暂停大约 1 秒，然后继续执行脚本，但我似乎无法弄清楚如何做。这是我的代码:

function hello() {
  alert("Hi!")
  //I need about a 1 seconed pause here;
  alert("Hi again!");
}

<button onclick="hello()">Say Hi!</button>

我已经尝试过以下方法:

function hello() {
  alert("Hi!")
  setTimeout(myFunction, 3000)//I thought this would wait, run the function, then return to the function hello()...
  alert("Hi again!")
}
function myFunction {
  a = document.getElementById("blank")
  a.innerHTML = "wait complete"
}

<button onclick="hello()">Say Hi!</button>
<div id="blank">
...
</div>

Answer 1

您使用 setTimeout 函数走在正确的轨道上:

function hello() {
  alert("Hi!")
  setTimeout(function() {
    alert("Hi again!");
  }, 1000)

}

<button onclick="hello()">Say Hi!</button>