html-select | 易学教程

How to print index of selected option in Elm?

阅读更多关于 How to print index of selected option in Elm?

I have a <select> HTML element with 3 options and a <p> element. In the <p> element I want to print index of the currently selected item in <select> . E.g. if I select the first option, it should print 0, if I select the second option, it should print 1, and so on. How do I proceed from the minimal code, which is given below? import Html as H exposing (Html) import Maybe import Signal as S exposing (Address, (<~)) type alias Model = { selected : Maybe Int } model = { selected = Nothing } type Action = NoOp | Select Int update action model = case action of NoOp -> model Select n -> { model |

Get value of HTML select option using its index with jQuery [closed]

阅读更多关于 Get value of HTML select option using its index with jQuery [closed]

Closed. This question is off-topic. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it's on-topic for Stack Overflow. HTML for select and options: <select class="dropdown"> <option value="one">One</option> <option value="two">Two</option> <option value="three">Three</option> </select> I want the value of the option at index 1, something along the lines of $('.dropdown[1]').value // should return 'two' $('.dropdown option').eq(1).val() eq() will start with 0 as it is an index Get the currently selected value with $('.dropdown option

How to open option list of HTML select tag on onfocus()

阅读更多关于 How to open option list of HTML select tag on onfocus()

My HTML code looks like below. <select id = "demo2"> <option value = "---select---">---select---</option> <option value = "1">Oranges</option> <option value = "2">Apples</option> <option value = "3">Pears</option> <option value = "4">Kiwis</option> <option value = "5">Bananas</option> <option value = "6">Banansasas</option> <option value = "7">Grapes</option> </select> How do I open the option list of the select tag on onfocus() events? Iren Patel $(document).ready(function(){ $('select').focus(function(){ $(this).attr("size",$(this).attr("expandto")); var x = "select[tabindex='" + (parseInt($

input field disabled until radio button is checked (HTML)

阅读更多关于 input field disabled until radio button is checked (HTML)

I have two fields, one of them is a text input field and the other is a select tag. The thing is I want one of them to be enabled only and the user should choose which one is enabled by clicking on one of the radio buttons above. So if the user chooses the first radio button the input field will be enabled and if he choose the second one the select tag will be enabled. Here's my code: <input type="radio" name="type" value="customurl">wanna custom url? <input type="text" name="custom" placeholder="should be 5 charecters at least" > <br><br> <input type="radio" name="type" value="customurl"

Show input field only if a specific option is selected

阅读更多关于 Show input field only if a specific option is selected

问题 I'm trying to make a form which checks if a certain option is selected from a "select" tag. Here is my current HTML: <select onchange="yesnoCheck()"> <option id="noCheck" value="">Valitse automerkkisi</option> <option id="noCheck" value="lada">Lada</option> <option id="noCheck" value="mosse">Mosse</option> <option id="noCheck" value="volga">Volga</option> <option id="noCheck" value="vartburg">Vartburg</option> <option id="yesCheck" value="other">Muu</option> </select> This is the div element

jquery mobile - set select/option values

阅读更多关于 jquery mobile - set select/option values

am trying to set select/option values using jquery Mobile and can't seem to get it working.  <!DOCTYPE html> <html> <head> <link rel="stylesheet" href="jquery.mobile/jquery.mobile.css" /> <script type="text/javascript" src="jquery.mobile/jquery.js"></script> <script type="text/javascript" src="jquery.mobile/jquery.mobile.js"></script> </head> <body> <div data-role="page" id="mainmenu"> <div data-role="header" data-position="inline"> <h1>Main Menu</h1> </div> <div class="ui-body ui-body-c"> <div data-role="content"> <div id='placeholderA' ></div> <div id=

Bootstrap 3 select input form inline

阅读更多关于 Bootstrap 3 select input form inline

问题 I'm trying to get input and select option inline attached with each other like this demo using Bootstrap 2. Following Bootstrap 3 guidelines I manage to do this: <div class="container"> <div class="col-sm-7 pull-right well"> <form class="form-inline" action="#" method="get"> <div class="form-group col-sm-5"> <input class="form-control" type="text" value="" placeholder="Search" name="q"> </div> <div class="form-group col-sm-3"> <select class="form-control" name="category"> <option>select<

jQuery Set Selected Option Using Next

阅读更多关于 jQuery Set Selected Option Using Next

问题 How can I, using jQuery, set the "next" item of an already selected item as "selected." For example, if I have: <select> <option value="1" >Number 1</option> <option value="2" selected="selected">Number 2</option> <option value="3" >Number 3</option> <option value="4" >Number 4</option> </select> We can see that "Number 2" is selected, and using jQuery, I'd like to set "Number 3" as selected, and remove the selected "attribute" from "Number 2". I'm assuming I need to use the next selector,

Javascript selecbox.options to array?

阅读更多关于 Javascript selecbox.options to array?

From what I understand a option elements that popuate select elements in HTML are an array. So basically what i want to do is return an array string that is separated by commas. Tried to do selecbox.options.join(','); , but got an error that its not supported; anyone have an idea why? It is not an array. It is an object. It is "array-like" from http://api.jquery.com/jQuery.each/ which CAN iterate over either: Iterate over both objects and arrays. Arrays and array-like objects with a length property (such as a function's arguments object) are iterated by numeric index, from 0 to length-1. Other

Rails 3: f.select - options_for_select

阅读更多关于 Rails 3: f.select - options_for_select

问题 I have a form on my Ruby on Rails3 Application with a drop menu, this is my current code for the select option: <%= f.select :phone_type, options_for_select(["Select One", "Cell", "Work", "Office", "Home", "Other"],:disabled => ["Select One"]), :class => 'genForm_dropBox' %> From my understanding this should have "Select One" as the default option when someone opens the page, but if they don't select one of the other options an error displays when they hit submit. This is true in Browsers