标签:reload cin gif name upload settime under mil play
History对象的方法
back:加载上一个URL
forward:加载下一个URL
go:前进至指定的URL( go(1)等同于forward go(-1)等同于back() )
Location对象的属性和方法:
href:获取当前浏览器的URL
reload():重载当前URL
<!DOCTYPE html> <html> <head> <title></title> </head> <body>
//添加图片 <img src="1.jpg" onclick="forwardPage()" style="cursor: pointer;"> <br>
//添加按钮 <input type="button" value="刷新" name="" onclick="refresh()"> </body> </html> <script type="text/javascript"> //location.href用于跳转页面 window.location.href = "http://www.baidu.com";
//页面跳转的方法 function forwardPage(){ location.href = "http://www.taobao.com"; } //重新加载页面的方法 function refresh(){ //重新加载当前的地址 location.reload(); } </script>
<!DOCTYPE html> <html> <head> <title></title> </head> <body> <!-- 应避免给超链接添加onclick事件,因为超链接本身就是点击操作,功能就会重复 --> <!-- 后退按钮 --> <a href="javascript:pageBack()" style="margin-right: 20px">后退</a> <br> <!-- 前进按钮 --> <a href="javascript:pageForward()" style="margin-left: 20px">前进</a> <!-- 复选框 --> <select onchange="changePage()" id="selPage"> <option value="none">-请选择-</option> <!-- 跳转至红色页面 --> <option value="red.html">red</option> <!-- 跳转至橙色页面 --> <option value="orange.html">orange</option> <!-- 跳转至黄色页面 --> <option value="yellow.html">yellow</option> </select> </body> </html> <script type="text/javascript"> //获取下拉列表框 var sel = document.getElementById("selPage"); function changePage(){ //获取选中项的值(如果没有写value值就会获取文本节点的值‘请选择’) //console.log(sel.value); //如果是选中的是有效的项 if(sel.value != "none"){ //根据选项的值进行页面跳转 location.href = sel.value; } }
function pageForward(){ //前进浏览过的缓存页面 window.history.forward(); } function pageBack(){ //后退之前浏览过的页面 window.history.back(); } </script>
HTML中的常见样式:
css样式基本示例:
<!DOCTYPE html> <html> <head> <title></title> </head> <style type="text/css"> /*文本相关样式*/ .d1{ color: red; font-size: 20px; font-style: italic; font-weight: bold; letter-spacing: 10px; /*font-family: "宋体";*/ text-align: center; line-height: 100px; text-decoration: underline; width:200px; height: 100px; background-color: gray; } /*背景样式*/ .d2{ background-image: url(image/1.jpg); background-repeat: no-repeat; /*background-size: cover;*/ /*background-position: center;*/ background-position: 50px 10px; width: 460px; height: 290px; background-color: gray; } /*盒子模型相关样式*/ .d3{ width: 400px; height: 200px; border: 5px solid blue; padding-left: 20px; margin-top: 100px; } .d4{ width: 200px; height: 200px; background-color: darkred; border-radius: 50%;//圆 } .container{ width: 600px; border: 5px solid; } .container div{ width: 200px; float: left; height: 300px; } /*清除浮动效果*/ .clear:after{ clear:both; display: block;//块级元素 content:""; } </style> <body> <div class="d1">文本样式</div> <hr> <div class="d2"></div> <hr> <div class="d3">内容</div> <div class="d4"></div> <!-- div布局 --> <div class="container clear"> <div style="background-color: red"></div> <div style="background-color: darkred"></div> <div style="background-color: orange"></div> </div> </body> </html>
根据JavaScript脚本访问样式:
对象.style.键(样式名称)=“值”
修改div层的宽高和背景颜色:
<!DOCTYPE html> <html> <head> <title></title> </head> <body>
<div id="d1"></div> </body> </html> <script type="text/javascript">
//获取d1标签 var d1 = document.getElementById("d1"); //使用style属性访问样式集合 d1.style.width = "360px"; d1.style.height = "190px"; d1.style.backgroundColor = "red";</script>
修改div的字体大小和背景图:
<!DOCTYPE html> <html> <head> <title></title> </head> <body> <div id="d1">文字内容</div> </body> </html> <script type="text/javascript"> //获取d1标签层 var d1 = document.getElementById("d1"); //设置标签内的文字大小设为20px d1.style.fontSize = "20px"; //设置标签的背景图 d1.style.backgroundImage = "url(image/1.jpg)"; </script>
通过脚本访问已有的类样式:
<!DOCTYPE html> <html> <head> <title></title> </head> <style type="text/css"> .d2{ width: 200px; height: 200px; border: 1px solid blue; } </style> <body> <div id="d2"></div> </body> </html> <script type="text/javascript"> //使用脚本访问类样式 var d2 = document.getElementById("d2"); d2.className = "d2";//填入样式名称 </script>
使用脚本设置按钮的样式:
<!DOCTYPE html> <html> <head> <title></title> </head> <body> <input type="button" id="btn" name=""> </body> </html> <script type="text/javascript"> //获取按钮 var btn = document.getElementById("btn"); //使用脚本设置按钮的样式 btn.style.width = "82px"; btn.style.height = "23px"; btn.style.backgroundImage = "url(image/back1.jpg)";
//去掉边框 btn.style.border = "none"; //鼠标进入 btn.onmouseenter = function(){ //修改背景图 btn.style.backgroundImage = "url(image/back2.jpg)"; }
//鼠标离开 btn.onmouseleave = function(){ btn.style.backgroundImage = "url(image/back1.jpg)"; } </script>
通过JavaScript获取读写行内样式:
<!DOCTYPE html> <html> <head> <title></title> </head> <body> <div id="d1" style="width:200px; height:200px;background-color:darkred" ></div> </body> </html> <script type="text/javascript"> var d1 = document.getElementById("d1"); //js访问的样式是可以进行读写 //获取层的宽度 //该方式只能访问到行内的样式,或者是js作用的样式 console.log(d1.style.width); //在原宽度上增加50px var width = parseInt(d1.style.width); d1.style.width = width+50+"px"; </script>
通过JavaScript获取读写外部样式:
<!DOCTYPE html> <html> <head> <title></title> </head> <style type="text/css"> .d1{ width: 200px; height: 200px; background-color: darkred; /*overflow: scroll;*/ position: absolute; left: 0px; } </style> <body> <div id="d1" style="" class="d1"></div> </body> </html> <script type="text/javascript"> var d1 = document.getElementById("d1"); //获取外部作用的样式(内嵌式样式、外部样式表作用的样式)传入的是获取到的元素对象:获取元素对象的样式 var style = window.getComputedStyle(d1); console.log(style.width); //获取宽度的其他方式 //返回number,这两个属性都是只读的 //clientWidth获取标签的实际宽度 console.log(d1.clientWidth); //offsetWidth获取标签包含滚动条、边框的宽度 console.log(d1.offsetWidth); </script>
改变div层的位置:
1.position:absolute;再配合top和left
2.margin 修改两个元素之间的距离(不建议用,因为会改变相对位置,影响布局)
<!DOCTYPE html> <html> <head> <title></title> </head> <style type="text/css"> .d1{ width: 200px; height: 200px; background-color: darkred; /*overflow: scroll;*/ position: absolute; left: 0px; } </style> <body> <div id="d1" style="" class="d1"></div> </body> </html> <script type="text/javascript"> var d1 = document.getElementById("d1"); //获取浏览器的大小 ,不同的浏览器需要根据document.body或者document.documentElement访问 //获取浏览器宽度 console.log(document.body.clientWidth); //获取浏览器的高度 console.log(document.body.clientHeight);
console.log(document.body.clientHeight);
console.log(document.documentElement.clientWidth); console.log(document.documentElement.clientHeight);
//每隔十毫秒就移动1像素 function move(){ console.log(parseInt(style.left)); d1.style.left = parseInt(style.left)+1+"px"; window.setTimeout("move()",10); } //move(); window.onresize = function(){ console.log("窗体大小发生了变化"); } </script>
标签:reload cin gif name upload settime under mil play
原文地址:https://www.cnblogs.com/gfl-1112/p/12846701.html