<form id ="password" method="post">
　　<table >
	<tr>
	　　<td>原密碼:</td>
	　　<td><input  type="password" class="easyui-validatebox" required="required" name="oldPassw"/></td>　　
	</tr>
	<tr>
	　　<td>新密碼:</td>
	　　<td><input type="password" class="easyui-validatebox" required="required" name="newPassw1"/></td>
	</tr>
	<tr>
	　　<td>確認密碼:</td>
	　　<td><input type="password" class="easyui-validatebox" required="required" name="newPassw2"/></td>
	</tr>
	<tr>
	　　<td colspan="2" ><input type="reset" value="重置" style="margin-left: 50px" />
	　　<input id="sub" type="button" value="提交" style="margin-left: 20px"></td>
	</tr>
　　</table>
</form>	

　jquery:

$(function() {
　　$("#sub").click(function(){
    	$("#password").form("submit",{
    		url:"xiuGaiPasswServlet",
    		onSubmit: function(){
    		var s = $("#passsword").form("validate");
    		if(s) {
    			return true;
    		} else {
    			$.messager.alert("提示","信息填寫不完整","info");
    			return false;
    		}
    		},	
    	　　　　　success:function(data){
    		var data1 = eval("("+data+")");
    			if(data1.success){
    				$.messager.alert("提示","修改密碼成功","info");
    				$("#xiugaimima").window("close");
    			} else {
    				$.messager.alert("提示","修改失敗","info");
    			}
    			if(data1.success1){
    				$.messager.alert("提示","兩次密碼不一致","info");
    			}
    			if(data1.success2){
    				$.messager.alert("提示","原始密碼錯誤","info");
    			}
    		　　}
    		});
    	});
});

easyui-validatebox:驗證框

提交form表單---修改密碼 ajax、jQuery