50個js技巧（分享）

時間 2019-12-02

標籤技巧分享欄目 JavaScript 简体版

原文原文鏈接

1.文本框焦點問題javascript

onBlur:當失去輸入焦點後產生該事件css

onFocus:當輸入得到焦點後，產生該文件html

Onchange:當文字值改變時，產生該事件java

Onselect:當文字加亮後，產生該文件web

<input type="text" value="mm" onfocus="if(value=='mm) {value=''}" onblur="if(value=='') {value='mm'}">sql

點擊時文字消失，失去焦點時文字再出現數據庫

2.網頁按鈕的特殊顏色post

<inputtype=buttonname="Submit1" value="郭強" size=10class=s02style="background-color:rgb(235,207,22)">網站

3.鼠標移入移出時顏色變化this

<inputtype="submit" value="找吧" name="B1" onMouseOut=this.style.color="blue"onMouseOver=this.style.color="red"class="button">

4.平面按鈕

<inputtype=submitvalue=訂閱 style="border:1px solid :#666666; height:17px; width:25pt; font-size:9pt;BACKGROUND-COLOR: #E8E8FF; color:#666666" name="submit">

5.按鈕顏色變化

<inputtype=text name="nick" style="border:1px solid #666666; font-size:9pt; height:17px;BACKGROUND-COLOR: #F4F4FF; color:#ff6600" size="15" maxlength="16">

6.平面輸入框

<inputtype="text" name="T1" size="20" style="border-style: solid; border-width: 1">

7.使窗口變成指定的大小

8.使文字上下滾動

<marqueedirection=upscrollamount=1scrolldelay=100onmouseover='this.stop()'onmouseout='this.start()'height=60>

<tr>

<td>共和國

</table>

</marquee>

9.狀態欄顯示該頁狀態

<baseonmouseover="window.status='網站建設 http://www.webmake.cn/' ;return true">

10.能夠點擊文字實現radio選項的選定

<br>

<inputtype="radio" name="regtype" value="A03" id="A03"><labelfor="A03"> 情侶 : 一次註冊兩個賬戶</label><br>

11.能夠在文字域的font寫onclick事件

12.打印</a>打印網頁

13.線型輸入框

<inputtype="text" name="key" size="12" value="關鍵字" onFocus=this.select()onMouseOver=this.focus()class="line">

14.顯示文檔最後修改日期

<scriptlanguage=javascript>function hi(str){ document.write(document.lastModified) alert("hi"+str+"!")}</script>

15.能夠在鼠標移到文字上時就觸發事件

<html>

<head>

<scriptlanguage="LiveScript">

<!-- Hiding function hello() { alert("哈羅!"); }

</script>

</head>

<body>

<ahref="" onMouseOver="hello()">link</a>

</body>

</html>

16.能夠根據網頁上的選項來肯定頁面顏色

<HTML>

<HEAD>

<TITLE>background.html</TITLE>

</HEAD>

<SCRIPT>



</SCRIPT>

<BODYSTYLE="font-family:Arial">

<B>Changing Background Colors</B>

<BR>

<FORM>

<SELECT SIZE="8" onChange="bgChange(this);">

<OPTION>Red<OPTION>

<OPTION>Yellow<OPTION>

<OPTION>Blue<OPTION>

<OPTION>Violet<OPTION>

<OPTION>pink<OPTION>

</SELECT>

</FORM>

</BODY>

</HTML>

17.將按鈕的特徵改變

<styletype="text/css">

<!--.style1{

font-size: 12px; background: #CCCCFF; border-width: thin thin thin thin; border-color: #CCCCFF#CCCCCC #CCCCCC #CCCCFF

}

.style2{

font-size: 12px; font-weight: bold; background: #CCFFCC; border-width: thin medium medium thin;border-color: #CCFF99 #999999 #999999 #CCFF99

}--></style>　　

本例按鈕的代碼以下：

<inputtype="submit" name="Submit" value="提交" onmouseover="this.className='style2'"onmouseout="this.className='style1'" class="style1">

18.改變按鈕的圖片.

<styletype="text/css">

<!--.style3{

font-size: 12px; background: url(image/buttonbg1.gif); border: 0px; width: 60px; height: 22px

}

.style4{

font-size: 12px; font-weight: bold; background: url(image/buttonbg2.gif); border: 0px 0; width:60px; height: 22px

}-->

</style>　　

本例的按鈕代碼以下：

<inputtype="submit" name="Submit2" value="提交" onmouseover="this.className='style4'"onmouseout="this.className='style3'" class="style3">

19.打印頁面<divalign="center"><aclass=contenthref="javascript:doPrint();">打印本稿</a></div>

20.能夠直接寫html語言document.write("");

21.改變下拉框的顏色

<selectname="classid"onChange="changelocation(document.myform.classid.options[document.myform.classid.selectedIndex].value)"size="1" style="color:#008080;font-size: 9pt">

22.轉至目標URL

window.location=http://guoguo

23.傳遞該object的formUpdateSN('guoqiang99267',this.form)function UpdateSN(strValue,strForm){ strForm.SignInName.value = strValue; return false;}

24.文字標籤

<labelfor="AltName4">

<inputname="AltName" type="RADIO" tabindex="931" id="AltName4">guoqiang99859

</label>

25.layer2爲組件的ID，能夠控制組件是否可見

document.all.item('Layer2').style.display = "block";document.all.item('Layer2').style.display = "none";//

26.將頁面加入favorite中

<scriptlanguage=javascript>

<!--function Addme(){

url ="http://your.site.address";//你本身的主頁地址title="Your Site Name";//你本身的主頁名稱window.external.AddFavorite(url,title);-->

</script>//

27.過10秒自動關閉頁面

< scriptlanguage="JavaScript">function closeit() {

setTimeout("self.close()"，10000)

}

< /script>

28.能夠比較字符的大小

char=post.charAt(i);if(!('0'<=char&&char<='9'))

29.將字符轉化爲數字month = parseInt(char)

30.點擊value非空的選項時轉向指定鏈接

</select>

31.改變背景顏色

<tdwidth=* class=dp bgColor=#FAFBFConmouseover="this.bgColor='#FFFFFF';"onmouseout="this.bgColor='#FAFBFC';">

32.改變文字輸入框的背景顏色

<style>

.input2{background-image: url('../images/inputbg.gif'); font-size: 12px; background-color:#D0DABB;border-top-width:1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px

}

</style>

<inputname=contenttype=text size="47" class="input2" maxlength="50">

33.改變水平線的特徵

<hrsize="0" noshade color="#C0C0C0">

34.傳遞參數的方式

<ahref="vote.asp?CurPage=8&id=3488">8</a>

35.頁內跳轉

<ahref="#2">2</a>

<ahref="#3">3</a>

<ahref="#4">4</a>

<ahref="#5">5</a>

<ahref="#6">6</a>

<ahref="#7">7</a>

<aname="1">dfdf</a>

<aname="2">dfdf</a>//

36.兩個按鍵一塊兒按下

if(event.ctrlKey && window.event.keyCode==13)//

37.刷新頁面

javascript:this.location.reload()//

38.將網頁的按鈕使能

<SCRIPTLANGUAGE="JavaScript">

function haha(){

for(var i=0;i<document.form1.elements.length;i++) {

if(document.form1.elements[i].name.indexOf("bb")!=-1)

document.form1.elements[i].disabled=!document.form1.elements[i].disabled;

}

</SCRIPT>

<BODY>

<formname=form1>

<INPUTTYPE="button" NAME="aa " value=cindyonclick=haha()>

<INPUTTYPE="button" NAME="bb " value=guoguo>

39.文字移動

<marqueescrollamount=3onmouseover=this.stop();onmouseout=this.start();>

40.雙擊網頁自動跑

<SCRIPTLANGUAGE="JavaScript">

var currentpos,timer;function initialize(){

timer=setInterval("scrollwindow()",1);

}

function sc(){

clearInterval(timer);

}function scrollwindow(){

currentpos=document.body.scrollTop; window.scroll(0,++currentpos);

if (currentpos!= document.body.scrollTop) sc();

}document.onmousedown=scdocument.ondblclick=initialize</SCRIPT>//

41.後退<INPUTTYPE="button" onclick=window.history.back()value=back>

42.前進<INPUTTYPE="button" onclick=window.history.forward()value=forward>

43.刷新<INPUTTYPE="button" onclick=document.location.reload()value=reload>

44.轉向指定網頁

document.location="http://ww"或者document.location.assign(http://guoguo.com)

45.在網頁上顯示實時時間

<SCRIPTLANGUAGE="JavaScript">var clock_id;window.onload=function(){ clock_id=setInterval("document.form1.txtclock.value=(new Date);",1000)}</SCRIPT>//

46.能夠下載文件document.location.href="目標文件"//

47.鏈接數據庫

import java.sql.*;String myDBDriver="sun.jdbc.odbc.JdbcOdbcDriver";Class.forName(myDBDriver);Connection conn=DriverManager.getConnection("jdbc:odbc:firm","username","password");Statement stmt=conn.createStatement();ResultSet rs=stmt.executeQuery(sql);rs.getString("column1");//

48.能夠直接在頁面「div」內寫下所需內容

<INPUTTYPE="button" onclick="a1.innerHTML='<font color=red>*</font>'"><divid=a1></div>//

49.能夠改變頁面上的鏈接的格式，使其爲雙線<style>

A:link {text-decoration: none; color:#0000FF; font-family: 宋體}

A:visited {text-decoration: none; color: #0000FF; font-family: 宋體}

A:hover {text-decoration: underline overline; color: FF0000}

</style>

<style>

A:link {text-decoration: none; color:#0000FF; font-family: 宋體}

A:visited {text-decoration: none; color: #0000FF; font-family: 宋體}

A:hover {text-decoration: underline overline line-through; color: FF0000}

TH{FONT-SIZE: 9pt}TD{FONT-SIZE: 9pt}

body {SCROLLBAR-FACE-COLOR:#A9D46D;

SCROLLBAR-HIGHLIGHT-COLOR: #e7e7e7;

SCROLLBAR-SHADOW-COLOR:#e7e7e7;

SCROLLBAR-3DLIGHT-COLOR: #000000;

LINE-HEIGHT: 15pt;

SCROLLBAR-ARROW-COLOR: #ffffff;

SCROLLBAR-TRACK-COLOR: #e7e7e7;

}

INPUT{

BORDER-TOP-WIDTH: 1px;

PADDING-RIGHT: 1px;

PADDING-LEFT: 1px;

BORDER-LEFT-WIDTH: 1px;

FONT-SIZE:9pt;

BORDER-LEFT-COLOR: #cccccc;

BORDER-BOTTOM-WIDTH: 1px;

BORDER-BOTTOM-COLOR: #cccccc;

PADDING-BOTTOM: 1px;

BORDER-TOP-COLOR: #cccccc;

PADDING-TOP: 1px; HEIGHT: 18px;

BORDER-RIGHT-WIDTH: 1px;

BORDER-RIGHT-COLOR: #cccccc

}

DIV,form ,OPTION,P,TD,BR{

FONT-FAMILY: 宋體; FONT-SIZE: 9pt

}

textarea, select{

border-width: 1;

border-color: #000000;

background-color: #efefef;

font-family: 宋體;font-size: 9pt;

font-style: bold;

}

.text{ font-family: "宋體";

font-size: 9pt;

color: #003300;

border: #006600 solid;

border-width: 1px 1px1px 1px

}

</style>

完整的css

50.新建frame<ahref="javascript:newframe('http://www.163.net/help/a_little/index.html','http://www.163.net/help/a_little/a_13.html')"><imgalt=幫助 border=0 src="http://bjpic.163.net/images/mail/button-help.gif"></a>

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