我有一个paypal结帐表单，我需要将多个选中的复选框值（name =＆＃34; cb1＆＃34;）连接成一个字符串，以便将其作为隐藏输入提交（name =＆＃34 ; os1＆＃34;）值。我试图解决这个问题。我知道JS很少！有人可以帮忙吗？
<div id="buyform">
<form target="paypal" id="ppform" name="ppform" action="https://www.paypal.com/cgi-bin/webscr" method="post" >
<input type="hidden" name="cmd" value="_cart">
<input type="hidden" name="business" value="myPPbusinessid">
<input type="hidden" name="lc" value="GB">
<input type="hidden" name="item_name" value="Form Title">
<input type="hidden" name="button_subtype" value="products">
<input type="hidden" name="no_note" value="0">
<input type="hidden" name="no_shipping" value="2">
<input type="hidden" name="currency_code" value="GBP">
<input type="hidden" name="add" value="1">
<input type="hidden" name="bn" value="PP-ShopCartBF:btn_cart_LG.gif:NonHosted">
<div><input type="hidden" name="on0" value="Options"><h5>Options</h5></div>
<div>
<select name="os0" id="os0" required>
<option value="Chosen Product">Any quantity £10.00 GBP</option>
</select>
</div>
<input type="hidden" name="on1" value="Colours">
<div>
<input type="checkbox" name="cb1" value="Red" id="os10" class="thecbox"/><label for="os10"></label>
<input type="checkbox" name="cb1" value="Green" id="os11" class="thecbox"/><label for="os11"></label>
<input type="checkbox" name="cb1" value="Orange" id="os12" class="thecbox"/><label for="os12"></label>
<input type="checkbox" name="cb1" value="Purple" id="os13" class="thecbox"/><label for="os13"></label>
<input type="checkbox" name="cb1" value="Yellow" id="os14" class="thecbox"/><label for="os14"></label>
<input type="checkbox" name="cb1" value="Black" id="os15" class="thecbox"/><label for="os15"></label>
<input type="checkbox" name="cb1" value="Blue" id="os16" class="thecbox"/><label for="os16"></label>
<input type="hidden" name="os1" value="EACH, CHECKED, VALUE, HERE">
</div>
<input type="hidden" name="currency_code" value="GBP">
<input type="hidden" name="option_select0" value="Options">
<input type="hidden" name="option_amount0" value="10.00">
<input type="hidden" name="option_index" value="0">
<input type="hidden" name="currency_code" value="GBP">
<input type="submit" border="0" name="submit" id="submit" value="Purchase" class="buynow mb0"></form>
</div>
答案 0 :(得分：0)
我似乎完全按照惯例工作了。不过可以帮助感觉JS需要整理！似乎很长一段时间我怀疑它应该是一小段代码...就像我说的那样：我的JS很难不存在！
<script type="text/javascript">
function checkTotal() {
document.ppform.os1.value = '';
if (document.getElementById('os10').checked){
var cb1str = document.ppform.cb1.value;
} else {
var cb1str = '';
}
if (document.getElementById('os11').checked){
var cb2str = document.ppform.cb2.value;
} else {
var cb2str = '';
}
if (document.getElementById('os12').checked){
var cb3str = document.ppform.cb3.value;
} else {
var cb3str = '';
}
if (document.getElementById('os13').checked){
var cb4str = document.ppform.cb4.value;
} else {
var cb4str = '';
}
if (document.getElementById('os14').checked){
var cb5str = document.ppform.cb5.value;
} else {
var cb5str = '';
}
if (document.getElementById('os15').checked){
var cb6str = document.ppform.cb6.value;
} else {
var cb6str = '';
}
if (document.getElementById('os16').checked){
var cb7str = document.ppform.cb7.value;
} else {
var cb7str = '';
}
var sum = cb1str.concat(cb2str).concat(cb3str).concat(cb4str).concat(cb5str).concat(cb6str).concat(cb7str);
document.ppform.os1.value = sum;
}
</script><div id="buyform">
<form target="paypal" id="ppform" name="ppform" action="https://www.paypal.com/cgi-bin/webscr" method="post" >
<input type="hidden" name="cmd" value="_cart">
<input type="hidden" name="business" value="myPPbusinessid">
<input type="hidden" name="lc" value="GB">
<input type="hidden" name="item_name" value="Form Title">
<input type="hidden" name="button_subtype" value="products">
<input type="hidden" name="no_note" value="0">
<input type="hidden" name="no_shipping" value="2">
<input type="hidden" name="currency_code" value="GBP">
<input type="hidden" name="add" value="1">
<input type="hidden" name="bn" value="PP-ShopCartBF:btn_cart_LG.gif:NonHosted">
<div><input type="hidden" name="on0" value="Options"><h5>Options</h5></div>
<div>
<select name="os0" id="os0" required>
<option value="Chosen Product">Any quantity £10.00 GBP</option>
</select>
</div>
<input type="hidden" name="on1" value="Colours">
<div>
<input type="checkbox" name="cb1" value="Red " id="os10" onchange="checkTotal()" /><label for="os10"></label>
<input type="checkbox" name="cb2" value="Green " id="os11" onchange="checkTotal()" /><label for="os11"></label>
<input type="checkbox" name="cb3" value="Orange " id="os12" onchange="checkTotal()" /><label for="os12"></label>
<input type="checkbox" name="cb4" value="Purple " id="os13" onchange="checkTotal()" /><label for="os13"></label>
<input type="checkbox" name="cb5" value="Yellow " id="os14" onchange="checkTotal()" /><label for="os14"></label>
<input type="checkbox" name="cb6" value="Black " id="os15" onchange="checkTotal()" /><label for="os15"></label>
<input type="checkbox" name="cb7" value="Blue " id="os16" onchange="checkTotal()" /><label for="os16"></label>
<input type="hidden" name="os1" value="">
</div>
<input type="hidden" name="currency_code" value="GBP">
<input type="hidden" name="option_select0" value="Options">
<input type="hidden" name="option_amount0" value="10.00">
<input type="hidden" name="option_index" value="0">
<input type="hidden" name="currency_code" value="GBP">
<input type="submit" border="0" name="submit" id="submit" value="Purchase" class="buynow mb0"></form>
</div>