JS一些技巧收藏
- 事件源对象
event.srcElement.tagName
event.srcElement.type - 捕获释放
event.srcElement.setCapture();
event.srcElement.releaseCapture(); - 事件按键
event.keyCode
event.shiftKey
event.altKey
event.ctrlKey - 事件返回值
event.returnValue - 鼠标位置
event.x
event.y - 窗体活动元素
document.activeElement - 绑定事件
document.captureEvents(Event.KEYDOWN); - 访问窗体元素
document.all("txt").focus();
document.all("txt").select(); - 窗体命令
document.execCommand - 窗体COOKIE
document.cookie - 菜单事件
document.oncontextmenu - 创建元素
document.createElement("SPAN"); - 根据鼠标获得元素：
document.elementFromPoint(event.x,event.y).tagName=="TD
document.elementFromPoint(event.x,event.y).appendChild(ms) - 窗体图片
document.images[索引] - 窗体事件绑定
document.onmousedown=scrollwindow; - 元素
document.窗体.elements[索引] - 对象绑定事件
document.all.xxx.detachEvent('onclick',a); - 插件数目
navigator.plugins - 取变量类型
typeof($js_libpath) == "undefined" - 下拉框
下拉框.options[索引]
下拉框.options.length - 查找对象
document.getElementsByName("r1");
document.getElementById(id); - 定时
timer=setInterval('scrollwindow()',delay);
clearInterval(timer); - UNCODE编码
escape() ,unescape - 父对象
obj.parentElement(dhtml)
obj.parentNode(dom) - 交换表的行
TableID.moveRow(2,1) - 替换CSS
document.all.csss.href = "a.css"; - 并排显示
display:inline - 隐藏焦点
hidefocus=true - 根据宽度换行
style="word-break:break-all" - 自动刷新
<meta HTTP-EQUIV="refresh" CONTENT="8;URL=http://c98.yeah.net"> - 简单邮件
<a href="mailto:[email protected]?subject=ccc&body=xxxyyy"> - 快速转到位置
obj.scrollIntoView(true) - 锚
<a name="first">
<a href="#first">anchors</a> - 网页传递参数
location.search(); - 可编辑
obj.contenteditable=true - 执行菜单命令
obj.execCommand - 双字节字符
/[^\x00-\xff]/
汉字
/[\u4e00-\u9fa5]/ - 让英文字符串超出表格宽度自动换行
word-wrap: break-word; word-break: break-all; - 透明背景
<IFRAME src="1.htm" width=300 height=180 allowtransparency></iframe> - 获得style内容
obj.style.cssText - HTML标签
document.documentElement.innerHTML - 第一个style标签
document.styleSheets[0] - style标签里的第一个样式
document.styleSheets[0].rules[0] - 防止点击空链接时，页面往往重置到页首端。
<a href="javascript:function()">word</a> - 上一网页源
asp:
request.servervariables("HTTP_REFERER")
javascript:
document.referrer - 释放内存
CollectGarbage(); - 禁止右键
document.oncontextmenu = function() { return false;} - 禁止保存
<noscript><iframe src="*.htm"></iframe></noscript> - 禁止选取<body oncontextmenu="return false" ondragstart="return false" onselectstart ="return false" onselect="document.selection.empty()" oncopy="document.selection.empty()" onbeforecopy="return false"onmouseup="document.selection.empty()>
- 禁止粘贴
<input type=text onpaste="return false"> - 地址栏图标
<link rel="Shortcut Icon" href="favicon.ico">
favicon.ico 名字最好不变16*16的16色,放虚拟目录根目录下 - 收藏栏图标
<link rel="Bookmark" href="favicon.ico"> - 查看源码
<input type=button value=查看网页源代码 onclick="window.location = 'view-source:'+ 'http://www.csdn.net/'"> - 关闭输入法
<input style="ime-mode:disabled"> - 自动全选
<input type=text name=text1 value="123" onfocus="this.select()"> - ENTER键可以让光标移到下一个输入框
<input onkeydown="if(event.keyCode==13)event.keyCode=9"> - 文本框的默认值
<input type=text value="123" onfocus="alert(this.defaultValue)"> - title换行
obj.title = "123
sdfs " - 获得时间所代表的微秒
var n1 = new Date("2004-10-10".replace(/-/g, "\/")).getTime() - 窗口是否关闭
win.closed - checkbox扁平
<input type=checkbox style="position: absolute; clip:rect(5px 15px 15px 5px)"><br> - 获取选中内容
document.selection.createRange().duplicate().text - 自动完成功能
<input type=text autocomplete=on>打开该功能
<input type=text autocomplete=off>关闭该功能 - 窗口最大化
<body onload="window.resizeTo(window.screen.width - 4,window.screen.height-50);window.moveTo(-4,-4)"> - 无关闭按钮IE
window.open("aa.htm", "meizz", "fullscreen=7"); - 统一编码/解码
alert(decodeURIComponent(encodeURIComponent("http://你好.com?as= hehe")))
encodeURIComponent对":"、"/"、";" 和 "?"也编码 - 表格行指示
<tr onmouseover="this.bgColor='#f0f0f0'" onmouseout="this.bgColor='#ffffff'">
<SCRIPT language=
"VBScript">
Function URLEncoding(vstrIn)
strReturn = ""
For i = 1 To Len(vstrIn)
ThisChr = Mid(vStrIn,i,1)
If Abs(Asc(ThisChr)) < &HFF Then
strReturn = strReturn & ThisChr
Else
innerCode = Asc(ThisChr)
If innerCode < 0 Then
innerCode = innerCode + &H10000
End If
Hight8 = (innerCode And &HFF00)\ &HFF
Low8 = innerCode And &HFF
strReturn = strReturn & "%" & Hex(Hight8) & "%" & Hex(Low8)
End If
Next
URLEncoding = strReturn
End Function
Function bytes2BSTR(vIn)
strReturn = ""
For i = 1 To LenB(vIn)
ThisCharCode = AscB(MidB(vIn,i,1))
If ThisCharCode < &H80 Then
strReturn = strReturn & Chr(ThisCharCode)
Else
NextCharCode = AscB(MidB(vIn,i+1,1))
strReturn = strReturn & Chr(CLng(ThisCharCode) * &H100 + CInt(NextCharCode))
i = i + 1
End If
Next
bytes2BSTR = strReturn
End Function
dim strA,oReq
strA = URLEncoding( "submit1=Submit&text1=中文")
set oReq = CreateObject( "MSXML2.XMLHTTP")
oReq.open "POST", "http://ServerName/VDir/TstResult.asp",false
oReq.setRequestHeader "Content-Length",Len(strA)
oReq.setRequestHeader "CONTENT-TYPE", "application/x-www-form-urlencoded"
oReq.send strA
msgbox bytes2BSTR(oReq.responseBody)
</SCRIPT>
Function URLEncoding(vstrIn)
strReturn = ""
For i = 1 To Len(vstrIn)
ThisChr = Mid(vStrIn,i,1)
If Abs(Asc(ThisChr)) < &HFF Then
strReturn = strReturn & ThisChr
Else
innerCode = Asc(ThisChr)
If innerCode < 0 Then
innerCode = innerCode + &H10000
End If
Hight8 = (innerCode And &HFF00)\ &HFF
Low8 = innerCode And &HFF
strReturn = strReturn & "%" & Hex(Hight8) & "%" & Hex(Low8)
End If
Next
URLEncoding = strReturn
End Function
Function bytes2BSTR(vIn)
strReturn = ""
For i = 1 To LenB(vIn)
ThisCharCode = AscB(MidB(vIn,i,1))
If ThisCharCode < &H80 Then
strReturn = strReturn & Chr(ThisCharCode)
Else
NextCharCode = AscB(MidB(vIn,i+1,1))
strReturn = strReturn & Chr(CLng(ThisCharCode) * &H100 + CInt(NextCharCode))
i = i + 1
End If
Next
bytes2BSTR = strReturn
End Function
dim strA,oReq
strA = URLEncoding( "submit1=Submit&text1=中文")
set oReq = CreateObject( "MSXML2.XMLHTTP")
oReq.open "POST", "http://ServerName/VDir/TstResult.asp",false
oReq.setRequestHeader "Content-Length",Len(strA)
oReq.setRequestHeader "CONTENT-TYPE", "application/x-www-form-urlencoded"
oReq.send strA
msgbox bytes2BSTR(oReq.responseBody)
</SCRIPT>
//readyState是xmlhttp返回数据的进度，0=载入中,1=未初始化,2=已载入,3=运行中,4=完成
(1)拖拽访问
event.dataTransfer.setData( "URL", oImage.src);
sImageURL = event.dataTransfer.getData( "URL")
(2)普通访问
window.clipboardData.setData( "Text",oSource.innerText);
window.clipboardData.getData( "Text");
event.dataTransfer.setData( "URL", oImage.src);
sImageURL = event.dataTransfer.getData( "URL")
(2)普通访问
window.clipboardData.setData( "Text",oSource.innerText);
window.clipboardData.getData( "Text");
<HTML>
<HEAD>
<META NAME= "save" CONTENT= "history">
<STYLE>
.sHistory {behavior:url(#default#savehistory);}
</STYLE>
</HEAD>
<BODY>
<INPUT class=sHistory type=text id=oPersistInput>
</BODY>
</HTML>
<HEAD>
<META NAME= "save" CONTENT= "history">
<STYLE>
.sHistory {behavior:url(#default#savehistory);}
</STYLE>
</HEAD>
<BODY>
<INPUT class=sHistory type=text id=oPersistInput>
</BODY>
</HTML>
<p style=
"page-break-after:always">page1</p>
<p style= "page-break-after:always">page2</p>
<p style= "page-break-after:always">page2</p>
<meta name=
"ROBOTS" content=
"属性值">
其中属性值有以下一些:
属性值为 "all": 文件将被检索，且页上链接可被查询；
属性值为 "none": 文件不被检索，而且不查询页上的链接；
属性值为 "index": 文件将被检索；
属性值为 "follow": 查询页上的链接；
属性值为 "noindex": 文件不检索，但可被查询链接；
属性值为 "nofollow":
其中属性值有以下一些:
属性值为 "all": 文件将被检索，且页上链接可被查询；
属性值为 "none": 文件不被检索，而且不查询页上的链接；
属性值为 "index": 文件将被检索；
属性值为 "follow": 查询页上的链接；
属性值为 "noindex": 文件不检索，但可被查询链接；
属性值为 "nofollow":
<object id=min classid=
"clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<param name= "Command" value= "Minimize"></object>
<object id=max classid= "clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<param name= "Command" value= "Maximize"></object>
<OBJECT id=close classid= "clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11">
<PARAM NAME= "Command" value= "Close"></OBJECT>
<input type=button value=最小化 onclick=min.Click()>
<input type=button value=最大化 onclick=max.Click()>
<input type=button value=关闭 onclick=close.Click()>
<param name= "Command" value= "Minimize"></object>
<object id=max classid= "clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<param name= "Command" value= "Maximize"></object>
<OBJECT id=close classid= "clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11">
<PARAM NAME= "Command" value= "Close"></OBJECT>
<input type=button value=最小化 onclick=min.Click()>
<input type=button value=最大化 onclick=max.Click()>
<input type=button value=关闭 onclick=close.Click()>
<META HTTP-EQUIV=
"pragma" CONTENT=
"no-cache">
<META HTTP-EQUIV= "Cache-Control" CONTENT= "no-cache, must-revalidate">
<META HTTP-EQUIV= "expires" CONTENT= "0">
<META HTTP-EQUIV= "Cache-Control" CONTENT= "no-cache, must-revalidate">
<META HTTP-EQUIV= "expires" CONTENT= "0">
<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)">
<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)">
<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">
language="javascript">
function jStartExcel() {
var xls = new ActiveXObject ( "Excel.Application" );
xls.visible = true;
var newBook = xls.Workbooks.Add;
newBook.Worksheets.Add;
newBook.Worksheets(1).Activate;
xls.ActiveWorkBook.ActiveSheet.PageSetup.Orientation = 2;
xls.ActiveWorkBook.ActiveSheet.PageSetup.PaperSize = 5;
newBook.Worksheets(1).Columns("A").columnwidth=50;
newBook.Worksheets(1).Columns("A").WrapText = true;
newBook.Worksheets(1).Columns("B").columnwidth=50;
newBook.Worksheets(1).Columns("B").WrapText = true;
newBook.Worksheets(1).Range("A1:B1000").NumberFormat = "0";
newBook.Worksheets(1).Range("A1:B1000").HorizontalAlignment = -4131;
newBook.Worksheets(1).Cells(1,1).Interior.ColorIndex="15";
newBook.Worksheets(1).Cells(1,1).value="First Column, First Cell";
newBook.Worksheets(1).Cells(2,1).value="First Column, Second Cell";
newBook.Worksheets(1).Cells(1,2).value="Second Column, First Cell";
newBook.Worksheets(1).Cells(2,2).value="Second Column, Second Cell";
newBook.Worksheets(1).Name="My First WorkSheet";
}
</script>
<script language=
"javascript">
function cc()
{
var e = event.srcElement;
var r =e.createTextRange();
r.moveStart('character',e.value.length);
r.collapse( true);
r.select();
}
</script>
<input type=text name=text1 value= "123" onfocus= "cc()">
function cc()
{
var e = event.srcElement;
var r =e.createTextRange();
r.moveStart('character',e.value.length);
r.collapse( true);
r.select();
}
</script>
<input type=text name=text1 value= "123" onfocus= "cc()">
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,''))"
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>
or
<head>