Note: Integer number is used for Index at the value place. Note: If the drop-down list allows multiple selections it will only return the index of the first option selected. Discuss. The selectedIndex property sets or returns the index of the selected option in a drop-down list. The pre-selected option will be displayed first in the drop-down list. function select (selectId, optionValToSelect) { //Get the select element by it's unique ID. Value A HTMLOptionsCollection containing the <option> elements contained by the <select> element. The value property sets or returns the value of the option (the value to be sent to the server when the form is submitted). To get the value of a select or dropdown in HTML using pure JavaScript, first we get the select tag, in this case by id, and then we get the selected value through the selectedIndex property. 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. Take a look at the custom JavaScript function that I wrote: //Custom function that changes a select element's option. When present, it specifies that an option should be pre-selected when the page loads. Using JavaScript. Changing selected option by value. Try accessing the select by its id. The HTMLSelectElement.options read-only property returns a HTMLOptionsCollection of the <option> elements contained by the <select> element. To add a new option to it, with the text "Text 1" displaying in the drop down box, and the value "Value1" being what would be submitted from the form, do this: var select = document.getElementById ("example-select"); select.options [select.options.length] = new Option ('Text 1', 'Value1'); Get value of the selected option and display it on the screen. The selectedIndex property sets or returns the index of the selected value in a drop-down list. For getting a selected option of the <select> component along with an individual selection, we use the below code: let selectOption = selectBox.options [selectBox.selectedIndex]; After that, we can access the value and text of a selected option by value and text properties: const selectedText = selectedOption.text; With jQuery, you can use the .each () method, which is a concise and less error-prone way to iterate over the DOM elements. 3. Description. Add options to Select2 after inititialzation. This is changed by adding a value attribute. Adding hard-coded values. But having many options and the lack of dynamically handling of the categories can make issues in the manual case. When this happens, the onselect event fires, which will trigger an alert function. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. The "basic" option value from the select list is predefined to remove from the list in this example. Solutions for this problems can be divided into 2 groups: that use option element API (example 1 and 2), that use DOM element API (example 3 and 4). In today's post, we will learn how to set the value of this HTML element in JavaScript. Note: The value "-1" will deselect all options (if any). Upon selection of a new option, I want the selected options' texts to be merged using a pipe character and fill in the input box. In JavaScript, selectedIndex property is used to set the value of a select box element. This seems to work for me: <script> document.getElementById ('input').onkeyup = function () { var input_val = document.getElementById ('input').value; document.getElementById ('formsel').value . var selectElement = document.getElementById (selectId); //Get the options. One thing that's needed, is that my options may have a trailing -, which I need to trim before merging its text. 10. Note: Returns null if the index number is out of range. 3. Return index: selectObject.selectedIndex. the selected option from a select element, using vanilla JavaScript simply get the element and read the value attribute. To get the selected value from a dropdown list, i.e. text syntax is below: var variableValue = $("selector option: selected").text(); The "option: selected" attribute is used to select specific content in the option tag. Definition and Usage. Method 1: Using the value property: The value of the selected element . You just need to get the value of the select, like this: var UserOption = document.getElementById ('UserSelect').value; Then you can get the name from the options array like this: console.log (options [UserOption-1]) Modified 1 month ago. The jQuery select option with. selectedIndex : It is an integer that gives the index of first selected option. This article will learn how to detect the onChange event of this HTML select in JavaScript.. Detect onChange Event of the select Element in JavaScript. // Select the contents of a text field. In this article, we will learn to get the selected values in the dropdown list in Javascript. To filter the selected options, you can use the :selected property. The selector is the id name (#IdName) of the select tag. A value of either true or false that sets the selected attribute value, i.e. In this article, we're going to have a look at how to add new options (items) to select (ComboBox) element in JavaScript. If no index is specified, it inserts the option at the end of the collection. document.getElementById("myText").select(); In pure JavaScript, you can loop through each <option> using for-of statement: function mySelectFunction () {. [add ( option [, index ])] Adds an <option> element into the collection at the specified index. A better alternative is to use the jQuery.map () instead. Basically this worked well until I used .each() to take the text of every selected option. Set Select Element Using document.getElementById() in JavaScript ; Set Select Element Using document.querySelector() in JavaScript ; select is an HTML input element that specifies the list of drop-down options from which the user can choose any option. Below is the output of the select list after removing the basic option value from the select list. top - modal that slides down from the top; bottom - modal that slides up from the bottom; center - modal that shows up in the middle with a pop animation; anchored - modal that shows up anchored to an input or any dom element; inline - embeddable picker that is rendered into the markup . selectedOptions : It gives the list of option elements that are currently selected. Adding an option tag to existing select in JavaScript. If a value attribute is present, it takes precedence over the default value. If this is not specified, a default value of false is used. 1466. The text () method returns a string of the selected option. To get the selected option of a <select> element with a single selection, you use the following code: let selectedOption = selectBox.options [selectBox.selectedIndex]; Code language: JavaScript (javascript) Then you can access the text and value of the selected option via text and value properties: Wrap <form></form> around <select> tag. JavaScript Select Option, HTML Select Option,HTMLSelectElement type,To get Selected Option using for loop,Summary,, JavaScript Select Option,The best JavaScript Tutorial In 2021 . Look on below examples to see how they work: The code above reads the selected value from the following HTML select: Using the select () method of the HTML DOM Input Text Object to select some content of a text field. Now, when the option "Pick your greet" is selected, the console.log(option) will not occur. We will understand both these methods through examples. The selected attribute is a boolean attribute. Tip: The selected attribute can also be set after the page loads, with a JavaScript. Method. const value = select.value; const desc = select.options[select.selectedIndex].text; log(`option desc`, desc); }); Displaying value selected by the user from a dropdown. 64. how to dynamically add options to an existing select in vanilla javascript. The select/combobox has five built-in display modes that can be controlled through the display option: . Note: the default value of an option element is the text which appears between the <option> </option> tags. 2. Tip: If the value property is not specified for an option element, then the text content will be sent to the server when the container form is submitted. Definition and Usage. The change event is raised for input, select, and textarea when the user commits a change to the element's value. Note that a value of true does not set the option to selected if it is not already selected. The first step is to make sure that <select> tag is enclosed by <form> tag for the following reasons: Multiple <select> inputs can be accessed through a single form element. let selectedValue = $ ("selectVal option:selected").text (); Let's show what will return these two methods with the following example: The val () method will select the value of the option for example "1", and if you want to get the string "Tom" you can use the text () method. It can be the text that gets displayed on the option element, its index, its id etc. The index starts at 0. Your code doesn't show the form you are trying to access with document.form, so I'm assuming there is no form. Get selected option text with JavaScript. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. options : It gives the list of all option elements in the select. By using selectedIndex property with the option property. A . 3. Create option Tag and Append to Select in JavaScript ; Use Option Constructor to Add New Options in JavaScript ; Use jQuery DOM Element to Add New Options in JavaScript ; Generally, options of a select element can be manually arranged. select is an HTML input element that specifies the dropdown list of options from which the user can choose any option. Using a form so that this <option> will be the default value selected in the <select> element when the page is first loaded. When we click on the button, then the basic option value is removed from the select list. var select = document.getElementById('language'); var value = select.options[select.selectedIndex].value; console.log(value); // en. Note: If no option is selected, the selectedIndex . var selectOptions = selectElement.options; //Loop through . Let's see 6 different ways of changing the selected option using JavaScript: 1. 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