我创建了这个自定义下拉菜单，其中包含自定义单选按钮。 我得到所选单选按钮的值并将其设置为span标记成功。
我没有得到的是：我想在下拉列表中显示的输入字段中设置相同的值，但该值未设置。
我使用纯js和jquery来执行此操作，但值是警告而不是设置到输入字段。
代码在此处显示：http://thekabir.in/onsitego-planlisting2017/index.html
步骤：点击检查品牌下拉菜单并选择任何品牌..
使用的jquery和js是
//filters dropdown
function DropDown(el) {
this.dd = el;
this.placeholder = this.dd.children('span');
this.opts = this.dd.find('div.dropdown li');
this.val = '';
this.index = -1;
this.initEvents();
}
DropDown.prototype = {
initEvents : function() {
var obj = this;
obj.dd.on('click',function(){
$(this).toggleClass("active");
$(this).parent().toggleClass("border-active");
$('.filters').toggleClass('border-bottom');
$(this).children('.dropdown').css('width',$(window).width());
var deID = $(this);
if(deID[0].id == 'devicebrand')
{
$('#devicebrand i.icon-down-arrow-1').addClass('icon-up-arrow-1').removeClass('icon-down-arrow-1');
}
return false;
});
obj.opts.on('click',function(e){
// e.preventDefault();
$(this).parent().addClass('hidden');
$(this).addClass('active');
var opt = $(this);
obj.val = opt.text();
obj.index = opt.index();
obj.placeholder.text(obj.val);
var currentID = $(this).parents('div.wrapper-dropdown-3')[0].id;
if(currentID == 'devicebrand')
{
$('#devicebrand.wrapper-dropdown-3 .dropdown li').removeClass('active');
$('#devicebrand.wrapper-dropdown-3 .dropdown li span').removeClass('icon-selected-radio-yellow').addClass('icon-oval-3-copy-3');
$('#devicebrand i.icon-up-arrow-1').addClass('icon-tick-filled').removeClass('icon-up-arrow-1');
$('.more-brands').addClass('hidden');
$('.covered').removeClass('hidden');
$('#manual-brand-input').val(obj.val);
}
$(this).children('span').removeClass('icon-oval-3-copy-3').addClass('icon-selected-radio-yellow');
$(this).parent().toggleClass("border-active");
$('.dropdown input').val('');
e.stopPropagation();
});
},
getValue : function() {
return this.val;
},
getIndex : function() {
return this.index;
}
};
$(function() {
var dd = new DropDown( $('#devicebrand') );
$(document).click(function() {
// all dropdowns
$('.wrapper-dropdown-3').removeClass('active');
});
});
Html：
<div class="filter check-brand">
<div id="devicebrand" class="wrapper-dropdown-3" tabindex="1">
<i class="icon icon-brand"></i>
<span data-val="-1">check brand </span>
<div class="dropdown brand">
<span class="icon-cross-it"></span>
<div class="side-info">
<p class="SELECT-YOUR-MOBILE-P">SELECT YOUR MOBILE BRAND </p>
<p class="One-line-to-explain">One line to explain why he needs to select his city. Along with more information.</p>
</div>
<div class="city-selection">
<ul>
<li><span class="icon-oval-3-copy-3"></span><a href="#" data-val="htc">HTC</a></li>
<li><span class="icon-oval-3-copy-3"></span><a href="#" data-val="motorola">motorola</a></li>
<li><span class="icon-oval-3-copy-3"></span><a href="#" data-val="xiaomi">xiaomi</a></li>
<li><span class="icon-oval-3-copy-3"></span><a href="#" data-val="lg">LG</a></li>
<li><span class="icon-oval-3-copy-3"></span><a href="#" data-val="samgsung">samgsung</a></li>
<li><span class="icon-oval-3-copy-3"></span><a href="#" data-val="sony">sony</a></li>
<li><span class="icon-oval-3-copy-3"></span><a href="#" data-val="huawei">huawei</a></li>
<li><span class="icon-oval-3-copy-3"></span><a href="#" data-val="google pixel">google pixel</a></li>
<li><span class="icon-oval-3-copy-3"></span><a href="#" data-val="nokia">nokia</a></li>
<li><span class="icon-oval-3-copy-3"></span><a href="#" data-val="le-eco">le-eco</a></li>
</ul>
<div class="more-brands">
<a class="more-brands-btn" href="javascript:void(0);">+ 254 Brands</a>
</div>
<div class="manual-brand">
<input placeholder="Enter your brand if not found above " id="manual-brand-input" class="manual-brand-input ui-autocomplete-input" value="" autocomplete="off" type="text"><span class="icon-shape_4"></span>
<ul id="ui-id-1" tabindex="0" class="ui-menu ui-widget ui-widget-content ui-autocomplete ui-front" style="display: none;"></ul></div>
<div class="covered hidden">
<p><span class="icon-tick"></span>Congratulations! Free Pick & Drop service available in your city</p>
<p><span class="icon-tick"></span>400 Service centers near you</p>
<p><span class="icon-tick"></span>20% of people bought this near your locality</p>
<p><span class="icon-tick"></span>3days is average repair time in your area.</p>
</div>
<div class="not-covered hidden">
<p><span class="icon-not-covered-tick"></span>Sorry, we are currently present in India. We don’t cover your City.</p>
<p>We can briefly state here why we dont cover particular city. Or if at all we are in process of including it.</p>
</div>
</div>
</div>
<i class="icon-down-arrow-1"></i>
<i class="icon-orange-cross hidden"></i>
</div>
</div>
这是同样的小提琴。 https://jsfiddle.net/kvab7wyd/1/
答案 0 :(得分：2)
<强>更新
将我的答案应用于OP的Fiddle
将您的值存储在变量中，然后将输入值设置为等于变量。你使用它的方式不起作用，因为document.getElementById('input').value是普通的JavaScript表达式而$(this).attr(data-)是jQuery表达式，如果你混合它们，你必须使用$(obj).get()或点符号{取消引用jQuery { {1}}，虽然我不完全确定这样做会有麻烦。当使用不在任何地方的链接时，BTW使用$(obj)[0]，这会在点击它时停止刺激性的跳跃。我也使用了e.preventDefault()而不是.data()它的结果相同，但.attr()看起来更清晰。
<强>段
.data()$('.dropdown li a').on('click', function(e){
var data = $(this).data('val');
e.preventDefault();
document.getElementById('manual-brand-input').value = data;
});
答案 1 :(得分：1)
主要变化在于：$（'。dropdown input'）。val（$（this）.find（'a'）。data（'val'））;
//filters dropdown
function DropDown(el) {
this.dd = el;
this.placeholder = this.dd.children('span');
this.opts = this.dd.find('div.dropdown li');
this.val = '';
this.index = -1;
this.initEvents();
}
DropDown.prototype = {
initEvents : function() {
var obj = this;
obj.dd.on('click',function(){
$(this).toggleClass("active");
$(this).parent().toggleClass("border-active");
$('.filters').toggleClass('border-bottom');
$(this).children('.dropdown').css('width',$(window).width());
var deID = $(this);
if(deID[0].id == 'devicebrand')
{
$('#devicebrand i.icon-down-arrow-1').addClass('icon-up-arrow-1').removeClass('icon-down-arrow-1');
}
return false;
});
obj.opts.on('click',function(e){
// e.preventDefault();
$(this).parent().addClass('hidden');
$(this).addClass('active');
var opt = $(this);
obj.val = opt.text();
obj.index = opt.index();
obj.placeholder.text(obj.val);
var currentID = $(this).parents('div.wrapper-dropdown-3')[0].id;
if(currentID == 'devicebrand')
{
$('#devicebrand.wrapper-dropdown-3 .dropdown li').removeClass('active');
$('#devicebrand.wrapper-dropdown-3 .dropdown li span').removeClass('icon-selected-radio-yellow').addClass('icon-oval-3-copy-3');
$('#devicebrand i.icon-up-arrow-1').addClass('icon-tick-filled').removeClass('icon-up-arrow-1');
$('.more-brands').addClass('hidden');
$('.covered').removeClass('hidden');
}
$(this).children('span').removeClass('icon-oval-3-copy-3').addClass('icon-selected-radio-yellow');
$(this).parent().toggleClass("border-active");
console.log($(this).data('val'));
$('.dropdown input').val($(this).find('a').data('val'));
e.stopPropagation();
});
},
getValue : function() {
return this.val;
},
getIndex : function() {
return this.index;
}
};
$(function() {
var dd = new DropDown( $('#devicebrand') );
$(document).click(function() {
// all dropdowns
$('.wrapper-dropdown-3').removeClass('active');
});
});
答案 2 :(得分：0)
你可以试试这个：
$('.dropdown li a').click(function(e){
$("#manual-brand-input").val($(this).attr('data-val'));
});
答案 3 :(得分：0)
我的代码中出现了一个小错误。
$('.dropdown input').val('');
这导致该值为空。
对不起伙计们。