日期:2014-05-16  浏览次数:20397 次

javascript高级应用

//各种尺寸
s? +=? "\r\n网页可见区域宽:"+? document.body.clientWidth;??
s? +=? "\r\n网页可见区域高:"+? document.body.clientHeight;??
s? +=? "\r\n网页可见区域高:"+? document.body.offsetWeight? +"? (包括边线的宽)";??
s? +=? "\r\n网页可见区域高:"+? document.body.offsetHeight? +"? (包括边线的宽)";??
s? +=? "\r\n网页正文全文宽:"+? document.body.scrollWidth;??
s? +=? "\r\n网页正文全文高:"+? document.body.scrollHeight;??
s? +=? "\r\n网页被卷去的高:"+? document.body.scrollTop;??
s? +=? "\r\n网页被卷去的左:"+? document.body.scrollLeft;??
s? +=? "\r\n网页正文部分上:"+? window.screenTop;??
s? +=? "\r\n网页正文部分左:"+? window.screenLeft;??
s? +=? "\r\n屏幕分辨率的高:"+? window.screen.height;??
s? +=? "\r\n屏幕分辨率的宽:"+? window.screen.width;??
s? +=? "\r\n屏幕可用工作区高度:"+? window.screen.availHeight;??
s? +=? "\r\n屏幕可用工作区宽度:"+? window.screen.availWidth;??


//过滤数字
<input type=text onkeypress="return event.keyCode>=48&&event.keyCode<=57||(this.value.indexOf('.')<0?event.keyCode==46:false)" onpaste="return !clipboardData.getData('text').match(/\D/)" ondragenter="return false">


//特殊用途
<input type=button value=导入收藏夹 onclick="window.external.ImportExportFavorites(true,'http://localhost');">
<input type=button value=导出收藏夹 onclick="window.external.ImportExportFavorites(false,'http://localhost');">
<input type=button value=整理收藏夹 onclick="window.external.ShowBrowserUI('OrganizeFavorites', null)">
<input type=button value=语言设置?? onclick="window.external.ShowBrowserUI('LanguageDialog', null)">
<input type=button value=加入收藏夹 onclick="window.external.AddFavorite('http://www.google.com/', 'google')">
<input type=button value=加入到频道 onclick="window.external.addChannel('http://www.google.com/')">
<input type=button value=加入到频道 onclick="window.external.showBrowserUI('PrivacySettings',null)">


//不缓存
<META HTTP-EQUIV="pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache, must-revalidate">
<META HTTP-EQUIV="expires" CONTENT="0">


//正则匹配
匹配中文字符的正则表达式: [\u4e00-\u9fa5]
匹配双字节字符(包括汉字在内):[^\x00-\xff]
匹配空行的正则表达式:\n[\s| ]*\r
匹配HTML标记的正则表达式:/<(.*)>.*<\/\1>|<(.*) \/>/?
匹配首尾空格的正则表达式:(^\s*)|(\s*$)(像vbscript那样的trim函数)
匹配Email地址的正则表达式:\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*
匹配网址URL的正则表达式:http://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?
以下是例子:
利用正则表达式限制网页表单里的文本框输入内容:
用正则表达式限制只能输入中文:onkeyup="value=value.replace(/[^\u4E00-\u9FA5]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\u4E00-\u9FA5]/g,''))"
1.用正则表达式限制只能输入全角字符: onkeyup="value=value.replace(/[^\uFF00-\uFFFF]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\uFF00-\uFFFF]/g,''))"
2.用正则表达式限制只能输入数字:onkeyup="value=value.replace(/[^\d]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))"
3.用正则表达式限制只能输入数字和英文:onkeyup="value=value.replace(/[\W]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))"


//消除图像工具栏
<IMG SRC="mypicture.jpg" HEIGHT="100px" WIDTH="100px" GALLERYIMG="false">?
or
<head>
<meta http-equiv="imagetoolbar" content="no">
</head>


//无提示关闭
function Close()
{
var ua=navigator.userAgent
var ie=navigator.appName=="Microsoft Internet Explorer"?true:false
if(ie)
{
????? var IEversion=parseFloat(ua.substring(ua.indexOf("MSIE ")+5,ua.indexOf(";",ua.indexOf("MSIE "))))
? if(IEversion< 5.5)
? {
?? var str? = '<object id=noTipClose classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">'
?????? str += '<param name="Command" value="Close"></object>';
?????? document.body.insertAdjacentHTML("beforeEnd", str);
?????? document.all.noTipClose.Click();
? }
?