Result Size: 625 x 534
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<!DOCTYPE html>
<html>
<body>
<p>点击 Start 按钮,2 秒后输出“Hello”。</p>
<p>在此示例中,我们还输出传递给 alertFunc() 函数的参数。</p>
<button onclick="myStartFunction()">开始</button>
<p id="demo"></p>
<p id="demo2" style="color:red;"></p>
<script>
var myVar;
function myStartFunction() {
  myVar = setTimeout(function(){ alertFunc("First parameter", "Second parameter"); }, 2000);
}
function alertFunc(param1, param2) {
  document.getElementById("demo").innerHTML += "Hello ";
  document.getElementById("demo2").innerHTML = "传递给 alertFunc() 的参数:<br>" 
  + param1 + "<br>" + param2 + "<br>";
}
</script>
</body>
</html>