问题描述
我有两个dropdownlists形式(可以说A和B)。当我选择从A值,B被填充相应的使用AJAX
在同一页我有一个按钮,当pressed,职位dropdownlists的所选项目到另一个PHP页面的价值。我遇到的问题是,B的选择的值返回为空/空。
有没有一种方法来存储使用AJAX填充DropDownList的选定值?
低于code:
(主要形式)
<表格名称=NewBar方法=邮报的onsubmit =返回validateFormOnSubmit(本)行动=AssignContactDetailToBar_f.php>
&其中; TR>
< TD WIDTH =150>< B>酒吧:LT; / B>< / TD>
< TD>
<选择名称=酒吧的onChange =getContact('AssignContactDetailToBar_f_getContacts.php栏=?'+ THIS.VALUE)大小= 1风格=宽度:190px>
<期权价值=> ---选择---< /选项>
< PHP
而($数据= mysql_fetch_array($ r_getBarsDetails))
{
回声<期权价值= \$数据['bar_id']\>。$数据['bar_name'](。$数据['town_name'。)< /选项>中;
}
?>
< / TD>
< / TR>
&其中; TR>
< TD WIDTH =150>< B>联系人:LT; / B>< / TD>
< TD>
< DIV ID =persondiv><选择名称=人大小= 1风格=宽度:190px>
<期权价值=> - 选择酒吧 - < /选项>
< / TD>
< / TR>
&其中; TR>
< TD>
<输入名称=安全类型=文字大小=15>
< / TD>
< TD>
<输入类型=提交名称=提交值=提交>
< / TD>
< / TR>
< /形式GT;
FORM来填充第二DROPDOWNLIST
<选择名称=人大小= 1风格=宽度:190px>
<期权价值=> - 选择人物 - < /选项>
< PHP
而($数据= mysql_fetch_array($结果))
{
回声<期权价值= \$数据['PERSON_ID']\>。。$数据['PERSON_NAME']$数据['person_surname']($数据['town_name'])< /选项>中。
?}>
如果你想看到来自这里
清除从盒B中的旧值,虽然u的插入新的选择选项也b在相应的选项中插入的值。
在JS注:argstr是字符串ü从值1分隔AJAX php文件获得:选项|数值2:选项和argctrl了previous乙栏选项
函数splitstr(argstr,argctrl)
{
变种O;
VAR CTRL =的eval(argctrl);
VAR prezar = argstr.split(|);
argctrl.length = 0;
clearcombo(CTRL);
如果(argstr!='')
{
对于(O = 0; O< prezar.length;○++)
{
splitarr = prezar [O] .split(:);
CTRL [ctrl.length] =新的选项(splitarr [1],splitarr [0]);
}
}
}
功能clearcombo(argctrl)
{
对于(VAR I = argctrl.length-1; I> = 0;我 - )
{
argctrl [I] =无效;
}
}
I have form with two dropdownlists (lets say A and B).When I select a value from A, B is being populated accordingly using AJAX
In the same page I have a button, that when pressed, posts the values of the selected items of the dropdownlists to another PHP page. The problem I am having is that the selected value of B is returned as Blank/Empty.
Is there a way to store the selected value of a dropdownlist populated using AJAX?
Code below:
(Main FORM)
<form name="NewBar" method="post" onsubmit="return validateFormOnSubmit(this)" action="AssignContactDetailToBar_f.php">
<tr>
<td width="150"><b>Bar:</b></td>
<td>
<select name = "bar" onChange="getContact('AssignContactDetailToBar_f_getContacts.php?bar='+this.value)" size = 1 style = "width:190px">
<option value = "">---Select---</option>
<?php
while ($data = mysql_fetch_array($r_getBarsDetails))
{
echo "<option value=\"".$data['bar_id']."\">".$data['bar_name']." (".$data['town_name'].")</option>";
}
?>
</td>
</tr>
<tr>
<td width="150"><b>Contact Person:</b></td>
<td>
<div id="persondiv"><select name = "person" size = 1 style = "width:190px">
<option value = "">--Select Bar--</option>
</td>
</tr>
<tr>
<td>
<input name="security" type="text" size="15">
</td>
<td>
<input type="submit" name="Submit" value="Submit">
</td>
</tr>
</form>
FORM to populate the 2nd Dropdownlist
<select name="person" size = 1 style = "width:190px">
<option value = "">--Select Person--</option>
<?php
while($data=mysql_fetch_array($result))
{
echo "<option value=\"".$data['person_id']."\">".$data['person_name']." ".$data['person_surname']." (".$data['town_name'].")</option>";
} ?>
if you would like to see the complete code download from here
Clear the old value from box B and while u are inserting new select options to B also insert the values in the options accordingly.
on jsNote: argstr is string u get from ajax php file seperated by value1:option1|value2:option2and argctrl got previous Box B options
function splitstr(argstr,argctrl)
{
var o;
var ctrl = eval(argctrl);
var prezar = argstr.split("|");
argctrl.length = 0;
clearcombo(ctrl);
if(argstr!='')
{
for (o=0; o < prezar.length; o++)
{
splitarr = prezar[o].split(":");
ctrl[ctrl.length] = new Option(splitarr[1], splitarr[0]);
}
}
}
function clearcombo(argctrl)
{
for (var i=argctrl.length-1; i>=0; i--)
{
argctrl[i] = null;
}
}
这篇关于如何使用所选择的价值论,从填充了AJAX / PHP的一个DropDownList的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!