optgroup

问题 my select option group is like <select multiple class="form-control form-white" data-placeholder="Select Courses"> <option value="all">All</option> <optgroup label="Play School"> <option value="1">All</option> <option value="2">Sec A</option> <option value="3">Sec B</option> </optgroup> <optgroup label="Nursery"> <option value="1">All</option> <option value="2">Sec A</option> <option value="3">Sec C</option> </optgroup> <optgroup label="LKG"> <option value="1">All</option> <option value="2"

问题 I got an issue with following script when the select-options become long: Solution with few options http://jsfiddle.net/hsQjh/5/ Long options with issue: http://jsfiddle.net/hsQjh/6/ My first select-box option is up to 40+ of options, thus the second select-box would be up to 40+ of optgroup as well, when I picked option ' 2 ' on first box, second box are populated all optgroup that is numbered started with 2, which is optgroup ' 2 ', ' 20 ' - ' 29 ' are populated, the same are happen to

问题 I got an issue with following script when the select-options become long: Solution with few options http://jsfiddle.net/hsQjh/5/ Long options with issue: http://jsfiddle.net/hsQjh/6/ My first select-box option is up to 40+ of options, thus the second select-box would be up to 40+ of optgroup as well, when I picked option ' 2 ' on first box, second box are populated all optgroup that is numbered started with 2, which is optgroup ' 2 ', ' 20 ' - ' 29 ' are populated, the same are happen to

问题 I have this nested array and i want to convert it into dropdown ,but at output it is just showing me combo-box with options as (array ,array,array) <select name="pcity" id="pcity" multiple="multiple"> <?php $pcitylist = array('Andaman and Nicobar' => array('North and Middle Andaman', 'South Andaman', 'Nicobar'), 'Andhra Pradesh' => array('Adilabad', 'Anantapur', 'Chittoor', 'East Godavari', 'Guntur', 'Hyderabad', 'Kadapa', 'Karimnagar', 'Khammam', 'Krishna', 'Kurnool', 'Mahbubnagar', 'Medak',

问题 Is there any way to make the option group selectable? <select> <optgroup value="0" label="Parent Tag"> <option value="1">Child Tag</option> <option value="2">Child Tag</option> </optgroup> </select> 回答1: I don't think you can but you can easily reproduce the visual style with css and thus only have options in your select, so everything is selectable. .optionGroup { font-weight: bold; font-style: italic; } .optionChild { padding-left: 15px; } <select multiple="multiple"> <option value="0"

问题 I have an issue with showing/hiding optgroup options. I tried showing them in Chrome and Internet explorer but never got to a solution that would work on both environments <select value="null" style="VERTICAL-ALIGN: top" id="country_code" class="elqField" name="country_code" onchange="validateStates(this.value)" > <option selected="true" value="">Choose One...</option> <option value="US">United States</option> <option value="CA">Canada</option> </select> <select value="null" style="VERTICAL

问题 Is there a way to target the first-child of the optgroup labeled "Portfolio" displaying the name "Main"? I need to remove it from showing only in a mobile menu (it doesn't display in the desktop menu). This is a Wordpress theme menu that is not accessible by Menus widget. The menu is created by a mobilemenu.js triggered by media query (I guess). It is displaying the Home page by 2 different names/menuitems. I was hoping to target just that menuitem and use a css display:none or a jQuery

问题 I want to show a ComboBox with OPTGROUP style header gruopings in Silverlight. Every website I find (including questions on SO) that sovle this link to an outdated link and, handily, show no code snippets for me to work from. E.g.: So how do I do this? 回答1: See my similar question: How to show group header for items in Silverlight combobox? I put dummy entries in collection source to indicate the group header and then modified DataTemplate to show the group headers in different way and normal

问题 I am having some difficulty populating a select box in Rails with option groups using grouped_options_for_select . I currently have 3 instance variables that I would like to add to one entire grouped array for the grouped select box. For example, I have: @fruits (which contains the object(s)) --- !ruby/object:Fruits attributes: id: 2 name: Banana @veggies (which contains the object(s)) --- !ruby/object:Veggies attributes: id: 23 name: Celery --- !ruby/object:Veggies attributes: id: 24 name:

问题 I have a select box in which i can select multiple options. In the select box are multiple optgroups. Is there an easy way to select a whole optgroup at once in javascript? 回答1: I suggest using jQuery (or another framework) to quickly handle DOM selections. Give each optgroup a class to make it easier to grab it. $("optgroup.className").children().attr('selected','selected'); If you want to select the entire group based on the user selecting the group, do the following: $("optgroup.className"