• Javascript populate dropdown from array

    Javascript populate dropdown from array

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    Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I have a text file which I am reading and storing the data in a javascript array, it's a list of cuisines. I want to use the array to fill up a drop down select box. I know how to hard code in the values for the drop down box using correct me if i'm wrong but I want to be able to use the array to fill it up instead.

    Use a for loop to iterate through your array. For each string, create a new option element, assign the string as its innerHTML and valueand then append it to the select element.

    If you have a very large list of elements that you want to append to a document, it can be non-performant to append each new element individually.

    javascript populate dropdown from array

    The DocumentFragment acts as a light weight document object that can be used to collect elements. Once all your elements are ready, you can execute a single appendChild operation so that the DOM only updates once, instead of n times. Learn more. Asked 7 years, 9 months ago.

    Active 3 years, 11 months ago. Viewed k times. Ameya Ameya 1 1 gold badge 9 9 silver badges 18 18 bronze badges. If you are reading this text file on the server, you probably want to generate the array using PHP or whatever server language you're using. Active Oldest Votes. Could not manage to make work none of the 2 solutions no matter the browser. ProduktName option. ProduktName; select. Alexander Heim Alexander Heim 9 9 bronze badges.

    How i can add option like "Choice" as first option? Sign up or log in Sign up using Google. Sign up using Facebook.

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    javascript populate dropdown from array

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    javascript populate dropdown from array

    Stack Overflow works best with JavaScript enabled.So, I have the list in an external file. I know how to read the file. I have a javascript that can pop up an alert showing each store number as it iterates the array.

    But I cannot figure out how to I add the elements of the array to my drop-down box. Am I not setting select to the drop-down list correctly? Is there a hidden language difference that means I need to do something other than select. Am I doing something else wrong? If im not wrong i have it used in several Lectora projects.

    I do think that maybe the only thing that you missed in your solution was the proper id of the dropdownList. As you see in my sample the name to refer is combo39id… You could give that a try, or just dissect my sample.

    Thank you very much! First, I was indeed not correctly identifying the control. Silly me for thinking I could find the element ID within the.

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    But this works perfectly:. I knew how to resize the droplist. Thanks again for your help. Basically, each choice in one drop down list changes the list in a second drop down list.

    The choice in the second drop down list changes the list in a third. Jason, yes, this is definitely possible. I fall into that category of developers that was originally thrust into the position because I was a trainer, have vision and am very technically inclined. JS and CSS are on my agenda for training once this project is complete. Hi Jason, mocked up a quick solution for this. Based on my previous entry for Stan, i continued on that… now linking 3 boxes together filling the content dynamically.

    Some things could be improved, but well. Multiple dynamic dropboxes. EDIT: I just noticed that you have to add selections in the droplist properties equal to the number of choices in the text box. For example:. Since I need 5 choices for droplist 2, I put items as choices for droplist 2. This happens in reverse, too — with only item 1 in the properties for droplist 2, it only ever shows 1 item. So close! Register Login. Viewing 15 posts - 1 through 15 of 24 total. March 7, at pm Score: 0.

    Stan Miller Member. Karma: 35 pts.Timothy is an enthusiast programmer and loves developing websites. Dropdown Lists takes very small space on a page while allowing to specify large volume of information from which user may select an option. The following code creates two list box named 'firstList' and 'secondList'. Also note 'onClick' attribute in 'firstList'. Whenever user click on the one of element in 'firstList', the function will fire. The explanation of what function does is explained in the next section.

    Create an array and populate it with values in JavaScript

    This function is required because it automatically fire the JavaScript code on page load. We need this function in our code since we want to populate the drop-down list 'firstList' automatically whenever page is displayed to user. In the function I have written the code to add values to 'firstList'.

    For this you first need to identify the control which can be done using following code:. This function is linked to drop-down list 'firstList' using the 'onClick' attribute. So whenever a user perform a click operation on 'firstList', it will invoke 'getFoodItem ' function. Please note that full code for both the functions i.

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    On the basis of condition the value is added to 'secondList'. I have also added the following line of code to clear 'secondList' before adding value to it each time. This is required because if it is not done than the value will be appended to 'secondList' each time and its data will simply grow and as a result inconsistent information will be displayed.

    In the Option class for adding values to both the lists, two strings are specified. The first string is specified to display value to user and second is specified for value to be used by code to display it in alert box or to store it in database.

    Sign in or sign up and post using a HubPages Network account. Comments are not for promoting your articles or other sites. I used your excellent article in a form I am building. It worked great. But when I load the page from the database, it doesn't display the values I retrieved from the database. What do I need to do to make this happen? I am trying to run your code. The first dropdown box becomes default --select -- after the click also. Though it populates the second dropdown menu.

    Good day sir, u really did a great and wonderful job here sir, but please sir i have a concern, how so i add a search option to the dropdown list if i have a very lengthy list and i do not want my user to start scrolling through a long list. Please help sir. Thanks this code is helpfull for me. Hi Sir, i have an html with a drop down list that contains a list of drinks and i want to link that to javascript such that when a user selects a particular drink, price of the drink will automatically pop up.

    For your query regarding multiple selection please visit my other article on following link.

    Adding options to List Box in client side Javascript

    If user select both snacks and drinks, that is multiple options from first dropdown, second dropdown should show options available in both snacks and drinks.Toggle navigation. Cancel Not a member?

    javascript populate dropdown from array

    Sign Up Forgot Password? Adding options to List Box in client side Javascript Options to a drop down list box can be added dynamically using client side JavaScript. We will discuss a simple way of adding options to a list. The process of adding can be controlled based on different condition required.

    Depending on conditions options can be removed also. Here we will take care that the options are added on the page loadso by default the list box is pre populated when the page is displayed. You can see the demo at the end of this page. Here is the function which collects the list box name, value and text as inputs and then adds the option to the list box. So we can add one option by calling the function once.

    Like this. So with this now you can easily create the list box. But we will add another step to this by using one array of months. So from the array of months we will loop through and add each month to the list box. Here is the code. Here is the syntax for this. To make it clear we will use this in our Listbox demo shown above.

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    We will keep the current month selected while populating the listbox. To get the current month we will use getMonth function. Demo of selecting default option Here is the change in source code.

    The advantage of datalist is users is not limited to given options only. You can learn basics of datalist in our HTML section. By using JavaScript we can add options to datalist. Number of Comments : Suresh "selectbox. Prasannjit how can we give link on add more option if we want to add more text box?

    I have 5 text box option A to option E and one dropdown list. Thanks in advance. Ramesh Agye Hi, sir i want when i select jan and hit submit button then open a new htm page for jan same nest Mikko How can I add names to the options? Santhosh K S i have dropdownlist having some filenames,and i have textbox, when i enter "Ab" in textbox,all file names started with Ab should list in same dropdown list useing javascript in client side, please help me.

    Jim Excellent. Simple, with a demo.What I am trying to do is to populate an html dropdown list with values from a file. I also need it coded to where it will look in the first field for a value from one dropdown box and then populate another dropdown box. I am trying to understand Java script, but I am not sure if I would be able to do this with Java Script. If not java script maybe a different client-side development. So I need a way to pull the information from the file.

    The first row will not be displayed in the HTML file as this will be coded into the web page. When someone selects the county Davidson from the html form i want it to show the davidson cities in the other dropdown box for them to select. The code I have been using to achieve this without the file is as follows:. I am not sure how to get the data from my file to do the same as how this code works. I need the first column to be searched and the second column to be displayed with javascript, activeX, or any other coding language that can do the trick in a web page from the client's side.

    The file will be located on a shared drive along with the web page in the same directory which is not on a server, this is why i need it to be on the client-side. The file can be in any format, that is why i just said file. I am not sure what files this can be done from. For what its worth, this is something I have been musing over for a couple of hours whilst working on other things The best approach IMHO is to use an object, this then forms part of the selection process and construction of the code means you now can eliminate some elements of the original code.

    This site is best viewed in a modern browser with JavaScript enabled. Something went wrong while trying to load the full version of this site. Try hard-refreshing this page to fix the error. Java script to dynamically populate dropdown box in HTML jolting32 What I am trying to do is to populate an html dropdown list with values from a file.

    Padonak file.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here.

    Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Using Javascript, how will I populate the rest of the drop down menu with the array values? So that the options will be "Choose a number", "1", "2", "3", "4", "5". You'll need to loop through your array elements, create a new DOM node for each and append it to your object.

    Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.

    I had the same requirement, I used "Alex Turpin" solution with small corrections as mentioned below. Corrections because with the appendChild function is loads when the DOM prepares.

    So It's not working in old 8 or lesser IE versions. So with the corrections it's working fine. You'll first get the dropdown element from the DOM, then loop through the array, and add each element as a new option in the dropdown like this:.

    Learn more. JavaScript - populate drop down list with array Ask Question. Asked 8 years ago. Active 2 months ago. Viewed k times. Bridget Arrington 6 6 silver badges 20 20 bronze badges. Please post your attempt and any error message s you're getting. Thank you. Active Oldest Votes.

    Javascript - Populate Select Option From Array

    Felix Kling k gold badges silver badges bronze badges. Alex Turpin Alex Turpin 40k 21 21 gold badges silver badges bronze badges. AbdallahOkasha That doesn't make sense. That error would happen if you tried to use el.

    If you use it like in my exmaple, it doesn't matter if it's a number the browsers will turn it into a string. Thanks for caring. AbdallahOkasha can you reproduce a minimal example of this error on something like jsfiddle.

    This's jsfiddle snippet alex in this example. Jaco B Jaco B 6 6 silver badges 13 13 bronze badges. Thanks Alex for your solution. Sairam Kukadala Sairam Kukadala 1, 9 9 silver badges 19 19 bronze badges.

    James Johnson James Johnson DashK DashK 2, 1 1 gold badge 17 17 silver badges 27 27 bronze badges.NET and checking whether javascript support is enabled or not. In this article we are going to learn how to populate a drop down list using JavaScript in asp.

    JavaScript is a client side scripting language which offers an advantage of reducing the load on the server side. Reducing the load term means that some part such as checking whether all the mandatory details are being filled or not in an registration form, or any other type of validation.

    If we try to perform all the validation on the server side naturally the server is going to take time for processing the details and finally it will give a response to client so this is not an efficient way to do the validation because in multi user environment many user are connecting to your web site and to perform validation on the server side is not the efficient way.

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    So in this type of scenario we can always make a use of JavaScript technology which offers validation at the client side itself. Code written in javascript are validate and executed at the client side only. The server is not known about the values which are generated at the client side.

    Moving to our designing part. Following is the source code for design of our Default. If you have developed a page which depends on JavaScript for form. Here we. We can detect this by using noscript tag and if the JavaScript is disabled then the.

    Here is the code to do that. This code will. Select Date : Year :. NOTE :- we are just simply detecting whether javascript is enabled or not. Hope you have enjoyed the article. View All. Populate a dropdownlist control using Javascript in ASP. Vishal Gilbile Updated date, Aug 01 Next Recommended Article.

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