JavaScript/013.practice.html at master · JammyDu/JavaScript · GitHub

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<!DOCTYPE HTML>
<!--<html>
<head>
<script>
function goBack()
  {
  window.history.back()
  }
</script>
</head>
<body>

<input type="button" value="Back" onclick="goBack()">

</body>
</html>-->
<!--<html>
<head>
<p>创建警告框</p>
<script type="text/javascript">
function disp_alert()
{
alert("我是警告框！！")
}
</script>
</head>
<body>

<input type="button" onclick="disp_alert()" value="显示警告框" />

</body>
</html>-->


<!--<html>
<head>
<p>创建确认框</p>
<script type="text/javascript">
function show_confirm()
{
var r=confirm("Press a button!");
if (r==true)
  {
  alert("You pressed OK!");
  }
else
  {
  alert("You pressed Cancel!");
  }
}
</script>
</head>
<body>

<input type="button" onclick="show_confirm()" value="Show a confirm box" />

</body>
</html>-->

<html>
<head>
<p>创建提示框</p>
<script type="text/javascript">
function disp_prompt()
  {
  var name=prompt("请输入您的名字","Bill Gates")
  if (name!=null && name!="")
    {
    document.write("你好！" + name + " 今天过得怎么样？")
    }
  }
</script>
</head>
<body>

<input type="button" onclick="disp_prompt()" value="显示提示框" />

</body>
</html>