效果图:
代码截图:(关键部分用框框标出)
源码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div>
<span id="date"></span><br>
<span id="week"></span>
</div>
<script>
var showDate = document.getElementById('date') // 获取页面元素
var showWeek = document.getElementById('week') // 获取页面元素
var time = new Date()
var year = time.getFullYear() //获取年份
var month = correctDate(time.getMonth() + 1) //获取月份
var day = correctDate(time.getDate()) //获取日期
var date = "今天是" + year + "年" + month + "月" + day + "日"
var week = time.getDay() // 获取星期几,返回的是0/1/2/3/4/5/6 0代表周日
var weeks = [ "星期日","星期一","星期二","星期三","星期四","星期五","星期六"]
var toWeek = weeks[week] // 获取今日星期
showDate.innerHTML = date // 将日期显示在页面
showWeek.innerHTML = toWeek // 将星期显示在页面
/* 这是一个规范数字的函数:
当时间小于10时,在数字前面加上0,统一都是用两个数字表示,
比如3月5日就显示03月05日
*/
function correctDate(date){
if(date<10){
return '0'+date
}
return date
}
</script>
</body>
</html>
安装如下步骤 *** 作:
1.在电脑磁盘空白出右键-新建,点击文档
2.将文档命名为index,用记事本打开
3.
写入一下代码,如图:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html"/>
<title>时间的动态显示</title>
</head>
<body>
</body>
</html>
4.在html头部写入获取时间的代码,如图
<script language="javascript">
var t = null
t = setTimeout(time,1000)//开始执行
function time()
{
clearTimeout(t)//清除定时器
dt = new Date()
var y=dt.getYear()+1900
var mm=dt.getMonth()+1
var d=dt.getDate()
var weekday=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"]
var day=dt.getDay()
var h=dt.getHours()
var m=dt.getMinutes()
var s=dt.getSeconds()
if(h<10){h="0"+h}
if(m<10){m="0"+m}
if(s<10){s="0"+s}
document.getElementById("timeShow").innerHTML = "现在的时间为:"+y+"年"+mm+"月"+d+"日"+weekday[day]+"
"+h+":"+m+":"+s+""
t = setTimeout(time,1000)//设定定时器,循环执行
}
</script>
5.
在内容部分写入div标签,并附上ID,用来加载时间的载体。如图:
<div id="timeShow" class="time1"></div>
6.在头部写入div的样式如图,并保存
<style>
.time1{width:100%height:50pxbackground:#FFF000line-height:50pxtext-align:center}
</style>
7.保存后,将文件后缀命名为html。点击查看,勾选文件扩展名
8.文件后缀命名由txt改为html
9.使用浏览器打开文件
10.可以看到编写的文件,网页显示时间了
1:首先要使用PHP的超全局变量 $_GET 和 $_POST 用于收集表单数据(form-data)2:然后使用INSERT INTO 语句用于向数据库表中插入新记录。
具体示例:
(1)首先创建了一个名为 "Persons" 的表,有三个列:"Firstname", "Lastname" 以及 "Age"。
<?php
$con = <a href="https://www.baidu.com/s?wd=mysql_connect&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1d9m1nzuARvmhcLuWb1PvF90ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EPHR1n164rHc4rj6YP16znHTz" target="_blank" class="baidu-highlight">mysql_connect</a>("localhost","peter","abc123")
if (!$con)
{
die('Could not connect: ' . mysql_error())
}
<a href="https://www.baidu.com/s?wd=mysql_select_db&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1d9m1nzuARvmhcLuWb1PvF90ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EPHR1n164rHc4rj6YP16znHTz" target="_blank" class="baidu-highlight">mysql_select_db</a>("my_db", $con)
mysql_query("INSERT INTO Persons (FirstName, LastName, Age)
VALUES ('Peter', 'Griffin', '35')")
mysql_query("INSERT INTO Persons (FirstName, LastName, Age)
VALUES ('Glenn', 'Quagmire', '33')")
mysql_close($con)
?>
(2)其次创建一个 HTML 表单,这个表单可把新记录插入 "Persons" 表。
<html>
<body>
<form action="insert.php" method="post">
Firstname: <input type="text" name="firstname" />
Lastname: <input type="text" name="lastname" />
Age: <input type="text" name="age" />
<input type="submit" />
</form>
</body>
</html>
(3)接着当用户点击上例中 HTML 表单中的提交按钮时,表单数据被发送到 "insert.php"。"insert.php" 文件连接数据库,并通过
$_POST 变量从表单取回值。然后,mysql_query() 函数执行 INSERT INTO 语句,一条新的记录会添加到数据库表中。
<?php
$con = <a href="https://www.baidu.com/s?wd=mysql_connect&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1d9m1nzuARvmhcLuWb1PvF90ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EPHR1n164rHc4rj6YP16znHTz" target="_blank" class="baidu-highlight">mysql_connect</a>("localhost","peter","abc123")
if (!$con)
{
die('Could not connect: ' . mysql_error())
}
<a href="https://www.baidu.com/s?wd=mysql_select_db&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1d9m1nzuARvmhcLuWb1PvF90ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EPHR1n164rHc4rj6YP16znHTz" target="_blank" class="baidu-highlight">mysql_select_db</a>("my_db", $con)
$sql="INSERT INTO Persons (FirstName, LastName, Age)
VALUES
('$_POST[firstname]','$_POST[lastname]','$_POST[age]')"
if (!mysql_query($sql,$con))
{
die('Error: ' . mysql_error())
}
echo "1 record added"
mysql_close($con)
?>
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