日期:2014-05-16  浏览次数:20414 次

常用 js 记录



?1. 获取表单里的元素值

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<form name="myform">

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?? <input type="text" name="mc" />

?? <input type="text" name="user.name" id="nameId"/>

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</form>

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?获取元素值:? 1.document.myform.mc.value

???????????????????? 2.document.myform.elements["user.name"].value

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2. 改变输入框为只读

?????????????????? document.myform.elements["user.name"].readOnly =?? true;

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3 改变输入框的样式

?????????????????? document.getElementById("nameId").className="inputStyle";

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4 显示动态时间

<script   language=JavaScript> 
var   timerID   =   null; 
var   timerRunning   =   false; 

function   stopclock   (){ 
if(timerRunning) 
clearTimeout(timerID); 
timerRunning   =   false;} 

function   startclock   ()   { 
stopclock(); 
showtime();} 

function   showtime   ()   { 
var   now   =   new   Date(); 

document.clock.thetime.value   =   now.toString(); 
timerID   =   setTimeout( "showtime() ",1000); 
timerRunning   =   true;} 
</SCRIPT> 
<body   onload=startclock()> 
<form   name=clock   > 
<input   name=thetime   style= "font-size:   9pt;color:#000000;border:0 "   size=100> 
</form> 

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5用jsp实现在线时间功能

<%@ page contentType="text/html;charset=gb2312" %>
<%@ page import="java.util.Date"%>
<% response.setHeader("Refresh","1"); %>
现在时间是:
<%=new Date() %>
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