Javascript 如何删除重复的选定项目并替换为数量
我一直在为学校做这个项目。这是K-J级的供应清单。每个等级有2支铅笔和各种其他类似物品。当你在幼儿园2支铅笔中选择一个项目，并在五年级时选择相同的项目，然后生成列表，我不需要2支铅笔显示两次，只需要一次，旁边有一个数量编号 我确信这与if语句有关，但我仍在努力掌握它们 这是jquery移动部件Javascript 如何删除重复的选定项目并替换为数量,javascript,jquery,html,jquery-mobile,Javascript,Jquery,Html,Jquery Mobile,我一直在为学校做这个项目。这是K-J级的供应清单。每个等级有2支铅笔和各种其他类似物品。当你在幼儿园2支铅笔中选择一个项目，并在五年级时选择相同的项目，然后生成列表，我不需要2支铅笔显示两次，只需要一次，旁边有一个数量编号 我确信这与if语句有关，但我仍在努力掌握它们 这是jquery移动部件 <body> <section class="header_default footer_default" data-role="page" id="setup" data-title=
<body>
<section class="header_default footer_default" data-role="page" id="setup" data-title="Setup">
<article data-role="content">
<div class="loaded"></div>
<p id="count"></p>
<form>
<fieldset data-role="controlgroup" id="hoursName">
<legend><strong>Kindergarten Supply List:</strong></legend>
<input type="checkbox" class="checkbox-group" name="checkboxsupply" id="1" value="(48 Quanity) #2 6-sided pencils (sharpened preferred)" >
<label for="1">(48 Quanity) #2 6-sided pencils (sharpened preferred)</label>
<input type="checkbox" class="checkbox-group" name="checkboxsupply" id="2" value="(2 Quanity) Red pencils">
<label for="2">(2 Quanity) Red Pencils</label>
<input type="checkbox" class="checkbox-group" name="checkboxsupply" id="3" value="(1 Quanity) Pack of pink erasers">
<label for="3">(1 Quanity) Pack of pink erasers</label>
<input type="checkbox" class="checkbox-group" name="checkboxsupply" id="4" value="(1 Quanity) Box of Kleenex (tissue)">
<label for="4">(1 Quanity) Box of Kleenex (tissue)</label>
<input type="checkbox" class="checkbox-group" name="checkboxsupply" id="5" value="(1 Quanity) Pack of pencil cap erasers">
<label for="5">(1 Quanity) Pack of pencil cap erasers</label>
</fieldset>
<fieldset data-role="controlgroup" id="hoursName">
<legend><strong>First Grade Supply List:</strong></legend>
<input type="checkbox" name="checkboxsupply" id="1" value="(48 Quanity) #2 6-sided pencils (sharpened preferred)" >
<label for="1">(48 Quanity) #2 6-sided pencils (sharpened preferred)</label>
<input type="checkbox" name="checkboxsupply" id="2" value="(2 Quanity) Red pencils">
<label for="2">(2 Quanity) Red Pencils</label>
<input type="checkbox" name="checkboxsupply" id="3" value="(1 Quanity) Pack of pink erasers">
<label for="3">(1 Quanity) Pack of pink erasers</label>
<input type="checkbox" name="checkboxsupply" id="4" value="(1 Quanity) Box of Kleenex (tissue)">
<label for="4">(1 Quanity) Box of Kleenex (tissue)</label>
<input type="checkbox" name="checkboxsupply" id="5" value="(1 Quanity) Pack of pencil cap erasers">
<label for="5">(1 Quanity) Pack of pencil cap erasers</label>
</fieldset>
<fieldset data-role="controlgroup" id="hoursName">
<legend><strong>Second Grade Supply List:</strong></legend>
<input type="checkbox" name="checkboxsupply" id="1" value="(48 Quanity) #2 6-sided pencils (sharpened preferred)" >
<label for="1">(48 Quanity) #2 6-sided pencils (sharpened preferred)</label>
<input type="checkbox" name="checkboxsupply" id="2" value="(2 Quanity) Red pencils">
<label for="2">(2 Quanity) Red Pencils</label>
<input type="checkbox" name="checkboxsupply" id="3" value="(1 Quanity) Pack of pink erasers">
<label for="3">(1 Quanity) Pack of pink erasers</label>
<input type="checkbox" name="checkboxsupply" id="4" value="(1 Quanity) Box of Kleenex (tissue)">
<label for="4">(1 Quanity) Box of Kleenex (tissue)</label>
<input type="checkbox" name="checkboxsupply" id="5" value="(1 Quanity) Pack of pencil cap erasers">
<label for="5">(1 Quanity) Pack of pencil cap erasers</label>
</fieldset>
<fieldset data-role="controlgroup" id="hoursName">
<legend><strong>Third Grade Supply List:</strong></legend>
<input type="checkbox" name="checkboxsupply" id="1" value="(48 Quanity) #2 6-sided pencils (sharpened preferred)" >
<label for="1">(48 Quanity) #2 6-sided pencils (sharpened preferred)</label>
<input type="checkbox" name="checkboxsupply" id="2" value="(2 Quanity) Red pencils">
<label for="2">(2 Quanity) Red Pencils</label>
<input type="checkbox" name="checkboxsupply" id="3" value="(1 Quanity) Pack of pink erasers">
<label for="3">(1 Quanity) Pack of pink erasers</label>
<input type="checkbox" name="checkboxsupply" id="4" value="(1 Quanity) Box of Kleenex (tissue)">
<label for="4">(1 Quanity) Box of Kleenex (tissue)</label>
<input type="checkbox" name="checkboxsupply" id="5" value="(1 Quanity) Pack of pencil cap erasers">
<label for="5">(1 Quanity) Pack of pencil cap erasers</label>
</fieldset>
<fieldset data-role="controlgroup" id="hoursName">
<legend><strong>Forth Grade Supply List:</strong></legend>
<input type="checkbox" name="checkboxsupply" id="1" value="(48 Quanity) #2 6-sided pencils (sharpened preferred)" >
<label for="1">(48 Quanity) #2 6-sided pencils (sharpened preferred)</label>
<input type="checkbox" name="checkboxsupply" id="2" value="(2 Quanity) Red pencils">
<label for="2">(2 Quanity) Red Pencils</label>
<input type="checkbox" name="checkboxsupply" id="3" value="(1 Quanity) Pack of pink erasers">
<label for="3">(1 Quanity) Pack of pink erasers</label>
<input type="checkbox" name="checkboxsupply" id="4" value="(1 Quanity) Box of Kleenex (tissue)">
<label for="4">(1 Quanity) Box of Kleenex (tissue)</label>
<input type="checkbox" name="checkboxsupply" id="5" value="(1 Quanity) Pack of pencil cap erasers">
<label for="5">(1 Quanity) Pack of pencil cap erasers</label>
</fieldset>
<fieldset data-role="controlgroup" id="hoursName">
<legend><strong>Fifth Grade Supply List:</strong></legend>
<input type="checkbox" name="checkboxsupply" id="1" value="(48 Quanity) #2 6-sided pencils (sharpened preferred)" >
<label for="1">(48 Quanity) #2 6-sided pencils (sharpened preferred)</label>
<input type="checkbox" name="checkboxsupply" id="2" value="(2 Quanity) Red pencils">
<label for="2">(2 Quanity) Red Pencils</label>
<input type="checkbox" name="checkboxsupply" id="3" value="(1 Quanity) Pack of pink erasers">
<label for="3">(1 Quanity) Pack of pink erasers</label>
<input type="checkbox" name="checkboxsupply" id="4" value="(1 Quanity) Box of Kleenex (tissue)">
<label for="4">(1 Quanity) Box of Kleenex (tissue)</label>
<input type="checkbox" name="checkboxsupply" id="5" value="(1 Quanity) Pack of pencil cap erasers">
<label for="5">(1 Quanity) Pack of pencil cap erasers</label>
</fieldset>
<fieldset data-role="controlgroup" id="hoursName">
<legend><strong>Sixth Grade Supply List:</strong></legend>
<input type="checkbox" name="checkboxsupply" id="1" value="(48 Quanity) #2 6-sided pencils (sharpened preferred)" >
<label for="1">(48 Quanity) #2 6-sided pencils (sharpened preferred)</label>
<input type="checkbox" name="checkboxsupply" id="2" value="(2 Quanity) Red pencils">
<label for="2">(2 Quanity) Red Pencils</label>
<input type="checkbox" name="checkboxsupply" id="3" value="(1 Quanity) Pack of pink erasers">
<label for="3">(1 Quanity) Pack of pink erasers</label>
<input type="checkbox" name="checkboxsupply" id="4" value="(1 Quanity) Box of Kleenex (tissue)">
<label for="4">(1 Quanity) Box of Kleenex (tissue)</label>
<input type="checkbox" name="checkboxsupply" id="5" value="(1 Quanity) Pack of pencil cap erasers">
<label for="5">(1 Quanity) Pack of pencil cap erasers</label>
</fieldset>
</form>
<button class="ui-btn ui-corner-all Create">Create List</button>
</article><!--content-->
</section>
<div data-role="page" id="nameList"></div>
<script id="jsbin-javascript">
$(".Create").on("click", function() {
var selectedValues = "";
$checkedCheckboxes = $("input:checkbox[name=checkboxsupply]:checked");
$checkedCheckboxes.each(function () {
$('#nameList').append('<li>' + $(this).val() + '</li>');
});
window.location = "#nameList";
});
</script>
再次感谢。假设您不能更改任何标记，下面是一种有点黑客式的方法：
$(".Create").on("click", function() {
var valuesToListItemMap = {};
$('#nameList').text("");
$checkedCheckboxes = $("input:checkbox[name=checkboxsupply]:checked");
$checkedCheckboxes.each(function () {
var value = $(this).val();
var element;
if (valuesToListItemMap[value]) {
element = valuesToListItemMap[value];
var newCount = parseInt(element.data('count')) + 1;
element.data('count', newCount);
element.text(value + ' ' + newCount + ' were selected');
} else {
element = $('<li>' + value + '</li>');
element.data('count', 1);
$('#nameList').append(element);
valuesToListItemMap[value] = element;
}
});
window.location = "#nameList";
});
演示：很酷它是如何改变商品中的数量的，但我想保持这些数字不变，因为这使它保持简单，寻找一种能计算某一商品的支票数量的方法。48支数量2支6面削尖铅笔首选3支已检查我很感激，我已接近拿到数量，但我无法删除重复的铅笔。再次感谢。对不起，我想我误解了所选的部分。给我一秒钟再做一次调整。很好。这实际上简化了一些事情看起来不错，我得检查一下你的密码，看看我回家或明天早上你做了什么，谢谢你这么快回答。