JavaScript£ºÒ»¸ö¼òµ¥µÄÈÕÆÚ¸ñʽÑéÖ¤

10:33:41 2009-11-14 
function checkDate() {
//È¡µÃdateµÄÖµ
if(!document.getElementById || !document.createTextNode()){return;}
var dateFiled = document.getElementById('date');
if(!dateFiled) {return;}
var dateValue = dateFiled.value;
var checkPattern = new RegExp("\\d{2}/\\d{2}/\\d{4}");
//ÊäÈë³õʼ»¯µÄÌáʾÐÅÏ¢
var errContainer= dateFiled.parentNode.getElementsByTagName('span')[0];
if(!errContainer) { return;}
var errorMessage=" ";
errContainer.firstChild.nodeValue=" ";
//ÅжÏÈÕÆÚÖµÊÇ·ñºÏÒªÇó
if(dateValue==""){
errorMessage="ÇëÊäÈëÒ»¸öÈÕÆÚ";
} else if(!checkPattern.test(dateValue)) {
errorMessage = "ÈÕÆÚ¸ñʽ²»¶Ô£¬ÇëÖØÐÂÊäÈë";

}
//Èç¹ûÓдíÎóÐÅÏ¢ÔòÔÚ<span>ÀïÃæÊä³ö´íÎóÐÅÏ¢£¬·ñÔò·µ»Øtrue
if(errorMessage!=" ") {
errContainer.firstChild.nodeValue = errorMessage;
dateFiled.focus();
return false;
} else {
return true;
}
}