Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. is a dependency here, but this can be adapted to work in pure javascript. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. elements. Set a default parameter value for a JavaScript function. You can also do like: In vanilla JavaScript, you can use the onchange property to specify an event handler to receive change events. 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. Definition and Usage. The output of both the code will be similar, as shown below. I don't know if I'm the one that doesn't get the question right, but this just worked for me: Use an onchange() event in your HTML, for example. To learn more, see our tips on writing great answers. when I changed it to stack) I want it's previous value i.e. However, the previous value is never reset so I keep getting the same previous value and text results. In JavaScript, selectedIndex property is used to set the value of a select box element. All of the data required by the select elements is included within the Web page. If a law is new but its interpretation is vague, can the courts directly ask the drafters the intent and official interpretation of their law? I have tried to explain with my own sample, but I hope it will help you. select so that when a option is selected its value is logged . By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. But I think its not an event that is send, but simply the document object model of the select tag. select.options [select.selectedIndex].text. If no option is selected then nothing will be returned. JavaScript in Plain English Coding Won't Exist In 5 Years. I wouldn't use this. The problem is 'live' event won't work with 'focus', I don't know any better solution. I need to get the value of the selected option in javascript: does anyone know how to get the selected value or text, please tell how to write a function for it. Basically I want to show the same combobox at different place,so i gave 2 different ids to 2 combobox.Is there anyway, that i can show the same combobox at different place. my expected in this case. For functional form purposes, name is still valid, also in HTML5, and should still be used. Making statements based on opinion; back them up with references or personal experience. See. (element) on which the event was dispatched. How did Dominion legally obtain text messages from Fox News hosts? This uses jQuery, which doesn't answer the OP's question. If you do it the first way, then the argument you'll get to your onchange function will be browser dependent. How do I get the current date in JavaScript? It depends on when you want to get the value (on change, on a button click, etc.). How did Dominion legally obtain text messages from Fox News hosts? as in example? [. The selectedIndex property sets or returns the index of the selected value in a drop-down list. Which "href" value should I use for JavaScript links, "#" or "javascript:void(0)"? This was exactly what I needed. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, @TheRedPeaperhaps because when this answer was written there was a chance (however remote) that an ancient version of Netscape Navigator needed to be accommodated, so an equally ancient method for accessing the value of a single select was used. There are several ways to achieve your desired result, this my humble way of doing it: Let the element hold its previous value, so add an attribute 'previousValue'. Making statements based on opinion; back them up with references or personal experience. If you are after the value just replace .text with value. If it's a match then use text Property (eg. Using pure event element, without referencing DOM document is the most flexible way which works in many environments like React, Vue or just plain HTML forms. While using W3Schools, you agree to have read and accepted our, , , , , , , , , , , , , , , , , ,