js总结1

 1、从数据库中查询是否有某个企业的信息:

sql = "select count(1) from B_ZA_ZAGXDW where qyzcmc='" + getFieldValue("qyzcmc") + "' and DELETEFLAG <> '1' and gxhylx ='"+gxhylx+"'"; var retValue = getValue(sql); if(retValue>0){ msg = msg + "数据库已存在此企业的信息,不能再保存!/n/n" bool = false; } if(bool == false){ alert(msg); return false; }

 

2、event.srcElement.name 用法。(事件发生在name=“”上时,或当触发name事件时)

 

<%@ page language="java" contentType="text/html; charset=utf-8" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> </head> <body> <div id="div_001"> <form id="form_001"> <input type="button" id="button_001_id" name="button_001_Name" value="单击查看" class="button_001_Class" onclick="Get_srcElement(this)"> </form> </div> <mce:script type="text/javascript"><!-- function Get_srcElement() { var srcElement="" srcElement = srcElement + "/n" + "event.srcElement.id : " + event.srcElement.id srcElement = srcElement + "/n" + "event.srcElement.tagName : " + event.srcElement.tagName srcElement = srcElement + "/n" + "event.srcElement.type : " + event.srcElement.type srcElement = srcElement + "/n" + "event.srcElement.value : " + event.srcElement.value srcElement = srcElement + "/n" + "event.srcElement.name : " + event.srcElement.name srcElement = srcElement + "/n" + "event.srcElement.className : " + event.srcElement.className srcElement = srcElement + "/n" + "event.srcElement.parentElement.id : " + event.srcElement.parentElement.id alert(srcElement) } // --></mce:script> </body> </html>

 

3、document.all.item

通过控件的名字定位控件,item()中是控件的名字

 

4、查数据库,然后赋值

setFieldValue("dwszdpcs",dwszdpcs+""); var dwszdpcsDetail = getValue("select detail from dictionary t where code = '"+getFieldValue("dwszdpcs")+"' and kind = '06'"); if(dwszdpcsDetail == "Error") dwszdpcsDetail = ""; var dwszdpcsElm=document.getElementById("_dwszdpcs").firstChild.value=dwszdpcsDetail;

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