How Do I Concat The Values Of Select And Input Field And Also Display Altogether With JavaScript

I'm making a phone picker input menu which has a and field just like below: Solution 1: You can do something like this const select = document.querySelector('#country'); const tel = document.getElementById('tel'); let prevVal = select.value; // storing previous value of select // this block will be exected on init of code if(tel.value) tel.value = `${select.value}${tel.value}`; else tel.placeholder = `${select.value}${tel.placeholder}`; // adding event on changing input tel.addEventListener('change', ({ target }) => { const reg = new RegExp(`(^${prevVal} )`); // checking do we already have country code if (reg.test(target.value)) tel.value = tel.value.replace(reg, target.value); else tel.value = `${select.value}${target.value}`; }); // adding event on changing select select.addEventListener('change', ({ target }) => { const reg = new RegExp(`(^${prevVal})`); if(tel.value) tel.value = `${target.value}${tel.value.replace(reg, '')}`; else tel.placeholder = tel.placeholder.replace(reg, target.value); prevVal = target.value; });Copy <select id="country"> <option data-countryCode="IN" value="91" selected>India</option> <option data-countryCode="US" value="1">US</option> <option data-countryCode="GB" value="44">UK</option> </select> <input type="tel" placeholder ="956 826 4457" id="tel">Copy Solution 2: First of all there are some wierd details in the code you provided. <select id-"country"> Copy supposes to be <select id="country"> Copy ? why do you concat templates with plus using templates at the same time? isn't it enough just to use tel.value = ${select.options[select.selectedIndex].value}${tel.value} ? In addition, what event are you going to use? If we select country for the first time it works well, adding '91' for example. But next time (if we picked up the wrong country accidentally) it will add the code again. As for the problem , could you give more detailed explanation of what happens now exactly Solution 3: The problem is that you have put a '-' instead of an '=' sign on the first line. It should be: <select id="country"> Copy Also, why have you used jQuery? Javascript covers it just as easily: const select = document.getElementById('country'); const tel = document.getElementById('tel'); tel.value = select.options[select.selectedIndex].value + tel.value; Copy Share Post a Comment for "How Do I Concat The Values Of Select And Input Field And Also Display Altogether With JavaScript" Top Question Trying To Grab URL Parameters, And POST Them With Form I am trying to get a landing page grab the URL parameters. … Are Deferred Scripts Executed Before DOMContentLoaded Event? Upon defer attribute MDN says: This Boolean attribute is s… How To Fetch Data Over Multiple Pages? My project is based on React, redux, redux-saga, es6 and I … JavaScript Image Slider That Will Allow More Slides To Be Added After Page Load I am currently building an image slider page. The slider lo… JavaScript: Hide Button Link If Input Field Is Empty I am trying to hide a button link (id='btnsubmit') … Auto Width Scroll Bar In Google Chart I using the Google Chart for in my HTML5 Project. which tak… Persistent HTML Outside Of JQuery Mobile Pages I want to include a bit of HTML outside of the element on … CSS Column-count Elements Jumping Across Columns I'm trying to get a dynamic amount of elements to show … How To Make Keypress Event Of Asp Textbox? Hi all i am writing calculation of varius asp textbox contr… LastModified() Function Returns Current Date And Time My question is : why when I use 'document.lastModified&… December 2024 (1) November 2024 (39) October 2024 (63) September 2024 (22) August 2024 (215) July 2024 (181) June 2024 (437) May 2024 (706) April 2024 (446) March 2024 (907) February 2024 (870) January 2024 (824) December 2023 (929) November 2023 (375) October 2023 (526) September 2023 (294) August 2023 (313) July 2023 (258) June 2023 (340) May 2023 (210) April 2023 (133) March 2023 (138) February 2023 (114) January 2023 (266) December 2022 (133) November 2022 (234) October 2022 (165) September 2022 (169) August 2022 (484) July 2022 (308) June 2022 (281) Menu Halaman Statis Beranda © 2022 - javascript dox