Tipps zur Erfahrung mit JavaScript-Frontend-Anwendungen häufen sich immer mehr.
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:aaa@bbb.com?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'">
//Verschiedene Größen
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;
//Nummern filtern
//Spezieller Zweck
//Kein Caching
//取得控件得绝对位置(1)
oRect = obj.getBoundingClientRect(); oRect.left oRect.
//最小化,最大化,关闭
<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()>
//光标停在文字最后
//页面进入和退出的特效
进入页面
推出页面
这个是页面被载入和调出时的一些特效。duration表示特效的持续时间,以秒为单位。transition表示使 用哪种特效,取值为1-23:
0 矩形缩小 1 矩形扩大 2 圆形缩小 3 圆形扩大 4 下到上刷新
5 上到下刷新 6 左到右刷新 7 右到左刷新 8 竖百叶窗 9 横百叶窗
10 错位横百叶窗 11 错位竖百叶窗 12 点扩散 13 左右到中间刷新
14 中间到左右刷新 15 中间到上下 16 上下到中间 17 右下到左上 18 右上到左下
19 左上到右下 20 左下到右上 21 横条 22 竖条 23
//网页是否被检索
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":
//打印分页
page1
page2
//设置打印
<object id="factory" style="display:none" viewastext classid="clsid:1663ed61-23eb-11d2-b92f-008048fdd814" codebase="http://www.meadroid.com/scriptx/ScriptX.cab#Version=5,60,0,360" ></object> <input type=button value=页面设置 onclick="factory.printing.PageSetup()"> <input type=button value=打印预览 onclick="factory.printing.Preview()"> <script language=javascript> function window.onload() { // -- advanced features factory.printing.SetMarginMeasure(2) // measure margins in inches factory.printing.SetPageRange(false, 1, 3) // need pages from 1 to 3 factory.printing.printer = "HP DeskJet 870C" factory.printing.copies = 2 factory.printing.collate = true factory.printing.paperSize = "A4" factory.printing.paperSource = "Manual feed" // -- basic features factory.printing.header = "居左显示&b居中显示&b居右显示页码,第&p页/共&P页" factory.printing.footer = "(自定义页脚)" factory.printing.portrait = false factory.printing.leftMargin = 0.75 factory.printing.topMargin = 1.5 factory.printing.rightMargin = 0.75 factory.printing.bottomMargin = 1.5 } function Print(frame) { factory.printing.Print(true, frame) // print with prompt } </script> <input type=button value="打印本页" onclick="factory.printing.Print(false)"> <input type=button value="页面设置" onclick="factory.printing.PageSetup()"> <input type=button value="打印预览" onclick="factory.printing.Preview()"><br> <a href="http://www.meadroid.com/scriptx/docs/printdoc.htm?static" target=_blank>具体使用手册,更多信息,点这里</a>
//自带的打印预览
WebBrowser.ExecWB(1,1) 打开 Web.ExecWB(2,1) 关闭现在所有的IE窗口,并打开一个新窗口 Web.ExecWB(4,1) 保存网页 Web.ExecWB(6,1) 打印 Web.ExecWB(7,1) 打印预览 Web.ExecWB(8,1) 打印页面设置 Web.ExecWB(10,1) 查看页面属性 Web.ExecWB(15,1) 好像是撤销,有待确认 Web.ExecWB(17,1) 全选 Web.ExecWB(22,1) 刷新 Web.ExecWB(45,1) 关闭窗体无提示 <style media=print> .Noprint{display:none;}<!--用本样式在打印时隐藏非打印项目--> .PageNext{page-break-after: always;}<!--控制分页--> </style> <object id="WebBrowser" width=0 height=0 classid="CLSID:8856F961-340A-11D0-A96B-00C04FD705A2"> </object> <center class="Noprint" > <input type=button value=打印 onclick=document.all.WebBrowser.ExecWB(6,1)> <input type=button value=直接打印 onclick=document.all.WebBrowser.ExecWB(6,6)> <input type=button value=页面设置 onclick=document.all.WebBrowser.ExecWB(8,1)> </p> <p> <input type=button value=打印预览 onclick=document.all.WebBrowser.ExecWB(7,1)> </center>
//去掉打印时的页眉页脚
<script language="JavaScript"> var HKEY_Root,HKEY_Path,HKEY_Key; HKEY_Root="HKEY_CURRENT_USER"; HKEY_Path="\\Software\\Microsoft\\Internet Explorer\\PageSetup\\"; //设置网页打印的页眉页脚为空 function PageSetup_Null() { try { var Wsh=new ActiveXObject("WScript.Shell"); HKEY_Key="header"; Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,""); HKEY_Key="footer"; Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,""); } catch(e){} } //设置网页打印的页眉页脚为默认值 function PageSetup_Default() { try { var Wsh=new ActiveXObject("WScript.Shell"); HKEY_Key="header"; Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"&w&b页码,&p/&P"); HKEY_Key="footer"; Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"&u&b&d"); } catch(e){} } </script> <input type="button" value="清空页码" onclick=PageSetup_Null()> <input type="button" value="恢复页码" onclick=PageSetup_Default()>
//浏览器验证
function checkBrowser() { this.ver=navigator.appVersion this.dom=document.getElementById?1:0 this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom)?1:0; this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0; this.ie4=(document.all && !this.dom)?1:0; this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0; this.ns4=(document.layers && !this.dom)?1:0; this.mac=(this.ver.indexOf('Mac') > -1) ?1:0; this.ope=(navigator.userAgent.indexOf('Opera')>-1); this.ie=(this.ie6 || this.ie5 || this.ie4) this.ns=(this.ns4 || this.ns5) this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns5 || this.ns4 || this.mac || this.ope) this.nbw=(!this.bw) return this; }
//计算内容宽和高
<SCRIPT language="javascript"> function test(obj) { var range = obj.createTextRange(); alert("内容区宽度: " + range.boundingWidth + "px\r\n内容区高度: " + range.boundingHeight + "px"); } </SCRIPT> <BODY> <Textarea id="txt" height="150">sdf</textarea><INPUT type="button" value="计算内容宽度" onClick="test(txt)"> </BODY>
//无模式的提示框
function modelessAlert(Msg) { window.showModelessDialog("javascript:alert(\""+escape(Msg)+"\");window.close();","","status:no;resizable:no;help:no;dialogHeight:height:30px;dialogHeight:40px;"); }
//屏蔽按键
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <noscript><meta http-equiv="refresh" content="0;url=about:noscript"></noscript> <title>屏蔽鼠标右键、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格键</title> </head> <body> <script language="Javascript"><!-- //屏蔽鼠标右键、Ctrl+N、Shift+F10、F11、F5刷新、退格键 //Author: meizz(梅花雨) 2002-6-18 function document.oncontextmenu(){event.returnValue=false;}//屏蔽鼠标右键 function window.onhelp(){return false} //屏蔽F1帮助 function document.onkeydown() { if ((window.event.altKey)&& ((window.event.keyCode==37)|| //屏蔽 Alt+ 方向键 ← (window.event.keyCode==39))) //屏蔽 Alt+ 方向键 → { alert("不准你使用ALT+方向键前进或后退网页!"); event.returnValue=false; } /* 注:这还不是真正地屏蔽 Alt+ 方向键, 因为 Alt+ 方向键弹出警告框时,按住 Alt 键不放, 用鼠标点掉警告框,这种屏蔽方法就失效了。以后若 有哪位高手有真正屏蔽 Alt 键的方法,请告知。*/ if ((event.keyCode==8) || //屏蔽退格删除键 (event.keyCode==116)|| //屏蔽 F5 刷新键 (event.ctrlKey && event.keyCode==82)){ //Ctrl + R event.keyCode=0; event.returnValue=false; } if (event.keyCode==122){event.keyCode=0;event.returnValue=false;} //屏蔽F11 if (event.ctrlKey && event.keyCode==78) event.returnValue=false; //屏蔽 Ctrl+n if (event.shiftKey && event.keyCode==121)event.returnValue=false; //屏蔽 shift+F10 if (window.event.srcElement.tagName == "A" && window.event.shiftKey) window.event.returnValue = false; //屏蔽 shift 加鼠标左键新开一网页 if ((window.event.altKey)&&(window.event.keyCode==115)) //屏蔽Alt+F4 { window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px"); return false; } } </script> 屏蔽鼠标右键、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格键 </body>
//屏蔽打印
//移动的图层,拖动
1.<span style='position:absolute;width:200;height:200;background:red' onmousedown=MouseDown(this) onmousemove=MouseMove() onmouseup=MouseUp()>meizz</span> <script language=javascript> var Obj; function MouseDown(obj) { Obj=obj; Obj.setCapture(); Obj.l=event.x-Obj.style.pixelLeft; Obj.t=event.y-Obj.style.pixelTop; } function MouseMove() { if(Obj!=null) { Obj.style.left = event.x-Obj.l; Obj.style.top = event.y-Obj.t; } } function MouseUp() { if(Obj!=null) { Obj.releaseCapture(); Obj=null; } } </script> 2. <div id="myDiv" src="logo.gif" ondrag="doDrag();" onmouseover="this.style.cursor='hand'" style="position:absolute;left=100;top=100;" onmousedown="doMouseDown();"> <a href="#" onclick="return false"><h1>wlecome</h1></a> </div> <script language="JavaScript" type="text/javascript"> var orgMouseX; var orgMouseY; var orgObjX; var orgObjY; function doDrag() { var myObject=document.all.myDiv; var x=event.clientX; var y=event.clientY; myObject.style.left=x-(orgMouseX-orgObjX); myObject.style.top=y-(orgMouseY-orgObjY); } function doMouseDown() { orgMouseX=event.clientX; orgMouseY=event.clientY; orgObjX=parseInt(document.all.myDiv.style.left); orgObjY=parseInt(document.all.myDiv.style.top); } </script>
//文档状态改变
<iframe src="a.html" id="f" name="f" scrolling="no" frameborder=0 marginwidth=0 marginheight=0></iframe> <script> var doc=window.frames["f"].document; function s(){ if (doc.readyState=="complete"){ document.all.f.style.height=doc.body.scrollHeight document.all.f.style.width=doc.body.scrollWidth } } doc.onreadystatechange=s </script>
//刷新后不变的文本框
<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>
//访问剪贴板
(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");
//操作COOKIE
function SetCookie(sName, sValue) { document.cookie = sName + "=" + escape(sValue) + "; "; } function GetCookie(sName) { var aCookie = document.cookie.split("; "); for (var i=0; i < aCookie.length; i++) { var aCrumb = aCookie[i].split("="); if (sName == aCrumb[0]) return unescape(aCrumb[1]); } } function DelCookie(sName) { document.cookie = sName + "=" + escape(sValue) + "; expires=Fri, 31 Dec 1999 23:59:59 GMT;"; }
//setTimeout增加参数
//自定义的apply,call
//下载文件
//检验连接是否有效
//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
//组件是否安装
isComponentInstalled("{6B053A4B-A7EC-4D3D-4567-B8FF8A1A5739}", "componentID"))
//检查网页是否存在
//连接数据库
//使用数据岛