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将JavaScript值传递给PHP并发布（同一文件）

javascript php

将JavaScript值传递给PHP并发布（同一文件）,javascript,php,Javascript,Php,我有一个名为sendform.php的文件，其中包含一个表单，用于发布数据并通过邮件发送 现在我有了一个JavaScript函数，可以将4个不同选择字段的选择选项相乘 <script language="javascript"> function Calculate() { var h = document.getElementById('bedrag-bol').value;

我有一个名为sendform.php的文件，其中包含一个表单，用于发布数据并通过邮件发送

现在我有了一个JavaScript函数，可以将4个不同选择字段的选择选项相乘

        <script language="javascript">
        function Calculate()
        {
            var h = document.getElementById('bedrag-bol').value;
            var l = document.getElementById('aantal-bol').value;
            var h2 = document.getElementById('bedrag-gamma').value;
            var l2 = document.getElementById('aantal-gamma').value;
            var h3 = document.getElementById('bedrag-douglas').value;
            var l3 = document.getElementById('aantal-douglas').value;
            var h4 = document.getElementById('bedrag-bartsmit').value;
            var l4 = document.getElementById('aantal-bartsmit').value;
            var result = h * l * 10 + h2 *l2 * 10 + h3 * l3 * 10 + h4 * l4 * 10;
            document.getElementById('totaal').innerHTML = result;
        }
    </script>
                    <form name="aanvraag" method="post" action="index.php?p=<?php echo $_GET['p']; ?>&amp;action=checkform">
                    <table width="700" cellpadding="3" cellspacing="3">
    <tr>
        <td><img src="bestanden/spaaractie/bol.png"  /></td>
        <td><img src="bestanden/spaaractie/gamma.png"  /></td>
        <td><img src="bestanden/spaaractie/douglas.png"  /></td>
        <td><img src="bestanden/spaaractie/bartsmit.png"  /></td>
    </tr>
    <tr>
        <td><select id="bedrag-bol" name="bedrag-bol" onChange="Calculate();">
                <option value="0" selected="selected">Kies uw bedrag</option>
                <option value="5" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-bol']) == "5") {echo "selected='selected'"; } ?>>&euro; 5,00</option>
                <option value="10" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-bol']) == "10") {echo "selected='selected'"; } ?>>&euro; 10,00</option>
                <option value="25" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-bol']) == "25") {echo "selected='selected'"; } ?>>&euro; 25,00</option>
                <option value="50" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-bol']) == "50") {echo "selected='selected'"; } ?>>&euro; 50,00</option>
            </select>
        </td>
        <td><select id="bedrag-gamma" name="bedrag-gamma" onChange="Calculate();">
                <option value="0" selected="selected">Kies uw bedrag</option>
                <option value="5" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-gamma']) == "5") {echo "selected='selected'"; } ?>>&euro; 5,00</option>
                <option value="10" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-gamma']) == "10") {echo "selected='selected'"; } ?>>&euro; 10,00</option>
                <option value="25" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-gamma']) == "25") {echo "selected='selected'"; } ?>>&euro; 25,00</option>
                <option value="50" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-gamma']) == "50") {echo "selected='selected'"; } ?>>&euro; 50,00</option>
            </select>
        </td>
        <td><select id="bedrag-douglas" name="bedrag-douglas" onChange="Calculate();">
                <option value="0" selected="selected">Kies uw bedrag</option>
                <option value="10" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-douglas']) == "10") {echo "selected='selected'"; } ?>>&euro; 10,00</option>
                <option value="25" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-douglas']) === "25") {echo "selected='selected'"; } ?>>&euro; 25,00</option>
                <option value="50" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-douglas']) == "50") {echo "selected='selected'"; } ?>>&euro; 50,00</option>
            </select>
        </td>
        <td><select id="bedrag-bartsmit" name="bedrag-bartsmit" onChange="Calculate();">
                <option value="0" selected="selected">Kies uw bedrag</option>
                <option value="5" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-bartsmit']) == "5") {echo "selected='selected'"; } ?>>&euro; 5,00</option>
                <option value="10" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-bartsmit']) === "10") {echo "selected='selected'"; } ?>>&euro; 10,00</option>
                <option value="25" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-bartsmit']) == "25") {echo "selected='selected'"; } ?>>&euro; 25,00</option>
                <option value="50" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['bedrag-bartsmit']) == "50") {echo "selected='selected'"; } ?>>&euro; 50,00</option>
            </select>
        </td>
    </tr>
    <tr>
        <td><select id="aantal-bol" name="aantal-bol" onChange="Calculate();">
                <option value="0" selected="selected">Kies het aantal</option>
                <option value="1" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bol']) == "1") {echo "selected='selected'"; } ?>>1</option>
                <option value="2" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bol']) == "2") {echo "selected='selected'"; } ?>>2</option>
                <option value="3" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bol']) == "3") {echo "selected='selected'"; } ?>>3</option>
                <option value="4" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bol']) == "4") {echo "selected='selected'"; } ?>>4</option>
                <option value="5" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bol']) == "5") {echo "selected='selected'"; } ?>>5</option>
                <option value="6" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bol']) == "6") {echo "selected='selected'"; } ?>>6</option>
                <option value="7" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bol']) == "7") {echo "selected='selected'"; } ?>>7</option>
                <option value="8" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bol']) == "8") {echo "selected='selected'"; } ?>>8</option>
                <option value="9" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bol']) == "9") {echo "selected='selected'"; } ?>>9</option>
                <option value="10" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bol']) == "10") {echo "selected='selected'"; } ?>>10</option>
            </select>
        </td>
        <td><select id="aantal-gamma" name="aantal-gamma" onChange="Calculate();">
                <option value="0" selected="selected">Kies het aantal</option>
                <option value="1" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-gamma']) == "1") {echo "selected='selected'"; } ?>>1</option>
                <option value="2" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-gamma']) == "2") {echo "selected='selected'"; } ?>>2</option>
                <option value="3" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-gamma']) == "3") {echo "selected='selected'"; } ?>>3</option>
                <option value="4" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-gamma']) == "4") {echo "selected='selected'"; } ?>>4</option>
                <option value="5" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-gamma']) == "5") {echo "selected='selected'"; } ?>>5</option>
                <option value="6" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-gamma']) == "6") {echo "selected='selected'"; } ?>>6</option>
                <option value="7" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-gamma']) == "7") {echo "selected='selected'"; } ?>>7</option>
                <option value="8" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-gamma']) == "8") {echo "selected='selected'"; } ?>>8</option>
                <option value="9" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-gamma']) == "9") {echo "selected='selected'"; } ?>>9</option>
                <option value="10" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-gamma']) == "10") {echo "selected='selected'"; } ?>>10</option>
            </select>
        </td>
        <td><select id="aantal-douglas" name="aantal-douglas" onChange="Calculate();">
                <option value="0" selected="selected">Kies het aantal</option>
                <option value="1" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-douglas']) == "1") {echo "selected='selected'"; } ?>>1</option>
                <option value="2" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-douglas']) == "2") {echo "selected='selected'"; } ?>>2</option>
                <option value="3" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-douglas']) == "3") {echo "selected='selected'"; } ?>>3</option>
                <option value="4" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-douglas']) == "4") {echo "selected='selected'"; } ?>>4</option>
                <option value="5" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-douglas']) == "5") {echo "selected='selected'"; } ?>>5</option>
                <option value="6" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-douglas']) == "6") {echo "selected='selected'"; } ?>>6</option>
                <option value="7" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-douglas']) == "7") {echo "selected='selected'"; } ?>>7</option>
                <option value="8" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-douglas']) == "8") {echo "selected='selected'"; } ?>>8</option>
                <option value="9" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-douglas']) == "9") {echo "selected='selected'"; } ?>>9</option>
                <option value="10" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-douglas']) == "10") {echo "selected='selected'"; } ?>>10</option>
            </select>
        </td>
        <td><select id="aantal-bartsmit" name="aantal-bartsmit" onChange="Calculate();">
                <option value="0" selected="selected">Kies het aantal</option>
                <option value="1" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bartsmit']) == "1") {echo "selected='selected'"; } ?>>1</option>
                <option value="2" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bartsmit']) == "2") {echo "selected='selected'"; } ?>>2</option>
                <option value="3" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bartsmit']) == "3") {echo "selected='selected'"; } ?>>3</option>
                <option value="4" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bartsmit']) == "4") {echo "selected='selected'"; } ?>>4</option>
                <option value="5" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bartsmit']) == "5") {echo "selected='selected'"; } ?>>5</option>
                <option value="6" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bartsmit']) == "6") {echo "selected='selected'"; } ?>>6</option>
                <option value="7" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bartsmit']) == "7") {echo "selected='selected'"; } ?>>7</option>
                <option value="8" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bartsmit']) == "8") {echo "selected='selected'"; } ?>>8</option>
                <option value="9" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bartsmit']) == "9") {echo "selected='selected'"; } ?>>9</option>
                <option value="10" <?php if(isset($_POST['Submitform']) && strip_tags($_POST['aantal-bartsmit']) == "10") {echo "selected='selected'"; } ?>>10</option>
            </select>
        </td>
    </tr>
</table>
<div style="margin-left:15px; margin-top:20px;"><span id="totaal" style="color:#F00;">0</span></div>
                        
                        <div id="fm-submit">
                            <input name="Submitform" value="Verstuur" type="submit" />
                        </div>
                

</form> 


函数计算（）
{
var h=document.getElementById（'bedrag-bol'）。值；
var l=document.getElementById（'aantal-bol'）。值；
var h2=document.getElementById（'bedrag-gamma'）。值；
var l2=document.getElementById（'aantal-gamma'）。值；
var h3=document.getElementById（'bedrag-douglas'）。值；
var l3=document.getElementById（'aantal-douglas'）。值；
var h4=document.getElementById（'bedrag-bartsmit'）。值；
var l4=document.getElementById（'aantal-bartsmit'）。值；
var结果=h*l*10+h2*l2*10+h3*l3*10+h4*l4*10；
document.getElementById（'totaal'）。innerHTML=result；
}

谢谢你的回复

这就成功了：

Javascript:


document.aanvraag.totaal.value = result; //assign value to hidden input element.


Html






@克里斯托夫：谢谢
 见表格


 <form name="aanvraag" method="post" action="" onsubmit="Calculate()">






在此处编写所有HTML并包含隐藏字段


<input type="hidden" name="totaal" id="totaal" value="" />

<input name="Submitform" value="Verstuur" type="submit" />

</form>






提交此表单时，在提交之前，表单计算函数将调用并粘贴

隐藏字段中的总值，然后用给定的URL发布所有值。
您是否碰巧看到了术语AJAX？但是google“XMLHttpRequestAjax教程”AJAX不需要这样做。您还可以拥有一个
并更新其
.value
。如果您想传递除字符串以外的任何内容，请查看JSON。@Christoph:AJAX在这里不是必需的（没有正确阅读问题），但我对隐藏字段不是很在行。也许更改更改事件的value属性更好？使用隐藏字段没有什么错。一旦用JS填充了值，表单就可以“正常”提交，而无需任何额外的努力，服务器端脚本可以像任何其他POST参数一样访问该值……没有比这更简单的了。

<input type="hidden" name="totaal" id="totaal" value="" />

<input name="Submitform" value="Verstuur" type="submit" />

</form>