Adding Optgroups To Select Using Javascript Dynamically

I have a dynamically populated (by ajax) select box with resulting options like that: London-P Solution 1: You can do this in place using jQuery: $(document).ready(function() { var select = $('#destination'); var opt1, opt2; $('option', select).each(function(i) { if (i % 2 === 0) { opt1 = $(this); } else { opt2 = $(this); var label = opt1.text().replace('London-', ''); var optgroup = $('<optgroup/>'); optgroup.attr('label', label); opt2.add(opt1).wrapAll(optgroup); } }); }); Copy This code iterates over all the options in the select tag, and wraps every set of two in an optgroup. It also figures out what to label the optgroup as, based on text in the options. Solution 2: This is not too tricky, you only need to move around your options a bit. Take them out of the document flow, add an optgroup in the place of the two associated options and append the options to that optgroup. Assuming that the options are actually sequential, as in your example, a possible, good old DOM scripting implementation is as follows: var destinationSelect = document.getElementById("destination"); var options = destinationSelect.getElementsByTagName("option"); var optgroups = []; while(options.length > 0) { var option1 = options[0]; var option2 = options[1]; var optgroup = document.createElement("optgroup"); var label = option1.innerHTML.replace(/^[^\-]-/, ""); optgroup.setAttribute("label", label); destinationSelect.removeChild(option1); destinationSelect.removeChild(option2); optgroup.appendChild(option1); optgroup.appendChild(option2); optgroups.push(optgroup); } for(var i = 0; i < optgroups.length; i ++) { destinationSelect.appendChild(optgroups[i]); } Copy Share Post a Comment for "Adding Optgroups To Select Using Javascript Dynamically" Top Question Firefox 5 DispatchEvent In Firefox I have some code that uses dispatchEvent to simulate clicks… String.fromCharCode Not Working On Keydown Event I am tyring to read the input characters on keydown event a… Getting DIV Id Based On X & Y Position The problem I'm trying to solve is 'What's at t… Coffeescript JQCloud Handlers I'm trying to do this in coffeescript, http://jsfiddle.… Set Anchor As Active With Jquery i have short question.. i got 3 content boxes and all have … Create A New Entity From Selection In Draft.js / /draftail, Wrap Existing Text And Link Entities I'm trying to create a new entity for Wagtail's Dra… Get And Update Text Every Few Seconds From An Http Source To An Https Website So, I have a radio station, my host provider does not have … JQuery Blur() Or Focusout() Not Firing In Internet Explorer So I have this form and I would like to do some stuff when … "Print" String Letter By Letter In React I have a React Native component that needs to show an Anima… Copy Contents Of Range Object (excel Column) To An Array Via Javascript what I want to do is access an excel file, take the content… December 2024 (1) November 2024 (40) October 2024 (72) September 2024 (22) August 2024 (381) July 2024 (342) June 2024 (709) May 2024 (1291) April 2024 (814) March 2024 (1566) February 2024 (1699) January 2024 (1367) December 2023 (1388) November 2023 (414) October 2023 (543) September 2023 (287) August 2023 (329) July 2023 (269) June 2023 (386) May 2023 (214) April 2023 (137) March 2023 (140) February 2023 (180) January 2023 (237) December 2022 (125) November 2022 (230) October 2022 (172) September 2022 (165) August 2022 (500) July 2022 (293) June 2022 (271) Menu Halaman Statis Beranda © 2022 - JavaScript Frameworks