I have a drop-down list with known values. A function returning the value to set. If autocomplete specific styling is needed, the following CSS class names can be used for overrides or as keys for the classes option: jQuery Nice Select. Prototype All objects have a prototype property. You could place at all the options as an array, with the first value [0] being 'Select manufacturer'. I'm a little bit confused about how to get an index of a selected option from a HTML item. ... ("#ddlPA option:selected").text(); 2) $ ... change dropdownlist selected index with javascript. Using regular JavaScript, I Receives the index position of the element in the set and the old value as arguments. jQuery UI is a curated set of user interface interactions, effects, widgets, and themes built on top of the jQuery JavaScript Library. The selectedIndex property sets or returns the index of the selected option in a drop-down list. // Update three select controls to match a datepicker selection function updateSelected(dates) { $('#selectedMonth').val(dates.length ? Use the following (jQuery): $("#selectId").attr('selec tedIndex', 2); 2 represent the selected index :) (auto increment starting with 0 to N ... PHP, jQuery, Bootstrap and XML. jQuery set dropdown option based on text Discussion in ' ... And your example wont change the selected dropdown option. Not onChange this.options[this.selected Index].val ue problem. this is the current element. 1 solution. This jQuery based tutorial will help you to learn how to load select option based on the previously selected field using on change event. Or use the val() method to determine if the value of an option is equal to 'Select manufacturer' and keep the models selectbox hidden if it is. Select2 is a jQuery based replacement for select boxes. FAQ Several template photo gallery on the same page I am publishing multiple galleries (to different pages). Attaches a change event to the select that gets the text for each selected option and writes them in the div. You have a select element, and you need to select one of its options based on one of its values. It will just set the value. How to get a selected index of a dropdownlist by using jquery in MVC3? It then triggers the event for the initial text draw. jQuery UI is a curated set of user interface interactions, effects, widgets, and themes built on top of the jQuery JavaScript Library. The autocomplete widget uses the jQuery UI CSS framework to style its look and feel. Due to its responsive nature, it re-arranges the items on window resize event. I have a drop-down list with known values. On this page there are two methods described. var invoiceNumberIndex = $("#invoice option:selected:index").val(); I tried above. Know jQuery functions, tutorials, jQuery UI, Selectors, Ajax, Plugins, jQuery interview questions and codes. This method is typically used to set the values of form fields. To change the selected value, or selected index if you will, of a dropdown list using jQuery is not particularly difficult. newWaterfall is a lightweight jQuery plugin that helps you to create a responsive Pinterest style layout for your website. val() allows you to pass an array of element values.