javascript set select value not working

Also, using tabIndex to prevent focus is a terrible idea. JQuery .selectedIndex = 0; not working on all selected field, How to set ASP.net dropdownlist index to 0 from the front-end, SelectedIndex is undefined with jQuery in dropdownlist, Disable elements in dropdown after or before an index, Setting the selected index after populating a dropdown list via ajax call How do you select a particular option in a SELECT element in jQuery? Script Initialize select2 on <select id='sel_users'>. dom-events 187 Questions How do you remove all the options of a select box and then add one option and select it with jQuery? That would result in your call String cb1Value = comboBox1.SelectedValue.ToString (); raising an object reference not set to an instance of an object error. It successfully change the value of the select. The value property can be used to set or update the value of a select element. To learn more, see our tips on writing great answers. To set the value of an element dynamically, then use the below javascript document.getElementById ('FirstName').value = "salam"; - AJJ Aug 19, 2013 at 9:28 Add a comment 2 Answers Sorted by: 1 Because of the placeholder you don't see the change. How to handle? I mean. However the JQuery api seems to indicate that for multiselects you should use the construct $ ("#IdOfMultiSelect").val ( ["valueJSON1", "valueJSON2", "ValueJSON3"]); This seems to indicate I first have to create an Array of the values of all of the objects returned by the JSON call and then set the val () of the multiselect to be that array. I wrote I namely need this attribute in html. On option change from $ ('#user_selected') then get the selected value. What laws would prevent the creation of an international telemedicine service? Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Changing selected option by value In order to change the selected option by the value attribute, all we have to do is change the value property of the <select> element. 5 Answers Sorted by: 24 see this answer - HTML form readonly SELECT tag/input You should keep the select element disabled but also add another hidden input with the same name and value. That will prevent the element from receiving focus on click. Would drinking normal saline help with hydration? <select> <option value="2" selected disabled hidden>Choose here</option> <option value="1">One</option> <option value="2">Two</option> <option value="3">Three</option . Why is setTimeout(fn, 0) sometimes useful? jQuery how to find an element based on a data-attribute value? Connect and share knowledge within a single location that is structured and easy to search. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. If a custom value is entered, the returned selected index is -1. undefined If called with a parameter as a setter. You can use: in the browser's console and you'll see the first name changed to foo. Connect and share knowledge within a single location that is structured and easy to search. To learn more, see our tips on writing great answers. Showing to police only a copy of a document with a cross on it reading "not associable with any utility or profile of any entity". can you give me fiddle or exaple on how to used this work around? I have verifed with firebug, Chrome and IE. Is it possible to stretch your triceps without stopping or riding hands-free? Note , value of selected attribute returns true or false , not "selected". Stack Overflow for Teams is moving to its own domain! when using ajax, you decide what to pass to the server in a dictionary of parameters. Is there a penalty to leaving the hood up for the Cloak of Elvenkind magic item? Using jQuery. To learn more, see our tips on writing great answers. Chain Puzzle: Video Games #02 - Fish Is You. Why? Can we prosecute a person who confesses but there is no hard evidence? see this fiddle to demnstrate how to extract the selected value in a disabled select into a hidden field that will be submitted in the form. and this is the problem, the parameter of .val() must be the value of the option field, instead you use the text value. When was the earliest appearance of Empirical Cumulative Distribution Plots? Why do my countertops need to be "kosher"? How can a retail investor check whether a cryptocurrency exchange is safe to use? How to monitor the progress of LinearSolve? I namely want this attrbute in html tag because I need to save and restore the part of this html-code in future. Where do you save the html? Syntax: selectElement.value The following illustrates how to remove the first option: select.remove (0); Code language: CSS (css) The second way to remove an option is to reference the option by its index using the options collection and set its value to null: select.options [ 0] = null; Is there any legal recourse against unauthorized usage of a private repeater in the USA? And this is how I set the values on jquery and to show them on modal form: The category and unit are dropdown list. What is the !! The website is a VB6 web class application and the server side code looks like this: It works in IE but it appears that when the javascript runs in Firefox, it fails to set the value of the hidden input element called 'button' before the form is submitted so that my app cannot tell, which button has been clicked. Most likely you do not have the <option> created ahead of time, so there is nothing to Select2. @GalV,is that will pass on server? map.get (key) - returns the value by the key, undefined if key doesn't exist in . reactjs 1960 Questions I'd recommend just giving the actual rendered HTML that is on the webpage. Because of the placeholder you don't see the change. To set the value of an element dynamically, then use the below javascript document.getElementById('FirstName').value = "salam"; Speeding software innovation with low-code/no-code tools, Tips and tricks for succeeding as a developer emigrating to Japan (Ep. So, when the user downloads his work later, the 'selected option' have to be selected. dom 159 Questions Works perfectly! You are passing value as boolean or string in react select but you are passing objects as it's options so that's why react select was not able to find show default value. Map - is a collection of keyed values. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. I've updated my question. GCC to make Amiga executables, including Fortran support? react-hooks 187 Questions When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. How do I do so? Thank you for this code snippet, which might provide some limited, immediate help. json 311 Questions You are passing value as boolean or string in react select but you are passing objects as its options so thats why react select was not able to find show default value. to $(".someClass").readonly();. vue.js 630 Questions If there is no selected options, nothing is returned. What city/town layout would best be suited for combating isolation/atomization? Asking for help, clarification, or responding to other answers. What is the name of this battery contact type? 1. I need 'selected' attribute in order to save-and-restore this part of html code. Connect and share knowledge within a single location that is structured and easy to search. Do (classic) experiments of Compton scattering involve bound electrons? You can't use pointer-events: none. Connect and share knowledge within a single location that is structured and easy to search. JavaScript $ ( <selector> ).get ( 0 ).selectedIndex = <required-index> When we have the option value, so use the CSS Attribute selector, and .attr () JavaScript $ ( <selector> ).find ( 'option [value="<required-value>"]' ).attr ( 'selected', 'selected') It actually set the value but the text is not updated. How to stop a hexcrawl from becoming repetitive? How can I select an element with multiple classes in jQuery? I can able to edit the HTML from inspect element and can modify the value. What is the meaning of to fight a Catch-22 is to accept it? How to trigger a file download when clicking an HTML button or JavaScript. Check with your browser versions. DevCodeTutorial. Setting "checked" for a checkbox with jQuery, Change the selected value of a drop-down list with jQuery. How can I attach Harbor Freight blue puck lights to mountain bike for front lights? Thanks for contributing an answer to Stack Overflow! Updated, substituted .attr("selected", true) for .prop("selected", true). Then, I noticed that both options were selected. What are the differences between and ? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. The first way is to use the remove () method of the HTMLSelectElement type. string 112 Questions Try utilizing selector $("option[value=" + this.value + "]", this) , set property selected to true , .siblings() to remove selected attribute from option not selected, It's not change the html itself but it does change the value of the select. Basic question: Is it safe to connect the ground (or minus) of two different (types) of power sources. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. input document.getElementById('firstname').value = 'foo'; ), Then you can it reflects the web page instantly. How do you remove all the options of a select box and then add one option and select it with jQuery? To do that, you can use the value property on the element. What is the name of this battery contact type? among select.options) and set its option.selected to true. Try utilizing selector $ ("option [value=" + this.value + "]", this) , set property selected to true , .siblings () to remove selected attribute from option not selected $ (document).on ("change","select",function () { $ ("option [value=" + this.value + "]", this) .attr ("selected", true).siblings () .removeAttr ("selected") }); solution 1: step #1: html step #2: create an instance of select2 step #3: set your desired value if you use select2 without ajax you can do as follow: you can also do so: for select2 v4 you can append directly an option/s as follow: or with jquery: other example solution 2: to dynamically set the "selected" value of a select2 component: where the By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The value change to "3" but the text says "Tipo de Equipo". If no option is selected, the value . Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Set the index of the option (not the value) ! Note: The ColumnName represents the column from your ' [ONCR]. Not the answer you're looking for? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. css 898 Questions This is very useful if you want to let the user . what value should be pass if i dont disabled the select? To avoid that problem - pass it inside the function body to refresh the textValue value with every click event. Why did The Bahamas vote in favour of Russia on the UN resolution for Ukraine reparations? To set option selected in <select id='sel_users'> pass value in val (value) and to update the view need to call - $ ('#sel_users').select2 ().trigger ('change'); Completed Code If anyone can help with this seemingly simple task, that would be great. How do I UPDATE from a SELECT in SQL Server? forms 110 Questions Jacqueline Gaul said: var mySelect = document.getElementById( 'my-select-id' ); mySelect.value = 7; You can also get the selected option by value just the same way: console.log( mySelect.value ); What I was looking for was a better way to set the values of a multiselect (<select multiple></select>) but as it turns out - it seems you have Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. rev2022.11.15.43034. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. input in an onchange event. Asking for help, clarification, or responding to other answers. Change a HTML5 input's placeholder color with CSS. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. How can I select an element with multiple classes in jQuery? Get selected text from a drop-down list (select box) using jQuery, Get the size of the screen, current web page and browser window. problem with the installation of g16 with gaussview under linux? What are the differences between and ? how to set select element as readonly ('disabled' doesnt pass select value on server), Speeding software innovation with low-code/no-code tools, Tips and tricks for succeeding as a developer emigrating to Japan (Ep. Step size of InterpolatingFunction returned from NDSolve using FEM. Why? You can simulate a readonly select box using the CSS pointer-events property: The HTML tabindex property will also prevent it from being selected by keyboard tabbing: To be able to pass the select, I just set it back to : without disabling the selected value on submitting.. To simplify things here's a jQuery plugin that can achieve this goal : https://github.com/haggen/readonly. array) of [key,value] pairs for initialization. selectedIndex : It is an integer that gives the index of first selected option. The Set has method checks if a value is in a Set object, using an approach that is, on average, quicker than testing most of the elements that have previously been added to the Set object. (not not) operator in JavaScript? To programmatically select an option/item for a Select2 control, use the jQuery .val () method: $ ( '#mySelect2' ).val ( '1' ); // Select the option with a value of '1' $ ( '#mySelect2' ).trigger ( 'change' ); // Notify any JS components that the value changed You can also pass an array to val make multiple selections: The selectedIndex property sets or returns the index of the selected value in a drop-down list. I'm having problems with this on mobile devices only, but not on desktop versions. Selecting an option using the value property # You can also use the value property to set the value of a select menu. Are softmax outputs of classifiers true probabilities? You can use: document.getElementById ('firstname').value = 'foo'; E.g. html 1972 Questions Syntax: Set index: selectObject.selectedIndex = number Return index: selectObject.selectedIndex Note: Integer number is used for Index at the value place. How can I set the default value for an HTML