Let’s say we have marks records and we need to sum them. The records are displayed in Radio Button −Marks1 75 {          if (evnt.checked) {             total = total + parseInt(evnt.value);             return;          }       });       secondMark.forEach((evnt) => {          if (evnt.checked) {             total = total + parseInt(evnt.value);             return;          }       });       ... Read More

To implement this, extract id from attr() and use replace() to replace the id attribute.ExampleFollowing is the code −            Document        $('[id*="-"]').each(function () {       console.log('Previous Id attribute: ' + $(this).attr('id'));       $(this).attr('id', $(this).attr('id').replace('-', '----'));       console.log('Now Id Attribute: ' + $(this).attr('id'));    }); To run the above program, save the file name “anyName.html(index.html)”. Right click on the file and select the option “Open with Live Server” in VS Code editor.OutputThis will produce the following output −Following is the value on console −

For this, use document.getElementById(“”) along with addEventListener().ExampleFollowing is the code − Live Demo            Document           FirstName:                           LastName:                                  const formDetails = document.getElementById("details");    formDetails.addEventListener("submit", async (ev) => {       ev.preventDefault();       var fName = document.getElementById("firstName").value;       var lName = document.getElementById("lastName").value;       console.log("First Name=" + ... Read More

Following is how you can validate RadioBoxes with jQuery −ExampleFollowing is the code − Live Demo            Document           Gender:       Male       Female             isStudent:       yes       No                    var nameValues = 'gen;student'.split(';');    $(function () {       $("form").on("submit", function (ev) {          if (nameValues.filter(val => $(`input[name=${val}]:checked`).length === 0).length > 0) {   ... Read More

Let’s say the following is our fixed element div −    Fixed The CSS style to fix the above element −.fixedElement {    position: fixed;    background-color: skyblue;    top: 0;    left: 0;    right: 0; }Following is our element, which will be scrolled −    David Miller Now, use the window.scrollTo().ExampleLet us see the complete code − Live Demo            Document    .fixedElement {       position: fixed;       background-color: skyblue;       top: 0;       left: 0;       right: ... Read More

Let’s say the following is our file and we need to read this file using jQuery.The name of the file details −ExampleFollowing is the code − Live Demo            Document        function chooseFile() {       dataFromMyFile = document.getElementById("readFileDemo").files[0];       readDataFromFile = new FileReader();       readDataFromFile.onload = () => {          data = readDataFromFile.result;          console.log("Your File Data is=");          console.log(data);       };       readDataFromFile.readAsText(dataFromMyFile);    } ... Read More

Let’s say the following is our select −    Get First Name    Get First Name Only To get only the first word, use split() on the basis of space and can select the 0th index value.ExampleFollowing is the code − Live Demo            Document        Get First Name    Get First Name Only        function showFirstValue(choosenObject) {       var allValues = choosenObject.value.split(" ");       var firstValue = allValues[0];       console.log("The first Name=" + firstValue);    } ... Read More

For this, call a function on button click.ExampleFollowing is the code − Live Demo            Document           ClickMeToCopyURL        https://www.tutorialspoint.com/index/    function demoForCopyURL(e) {       event.preventDefault();       var rootText = event.target.parentElement.innerText       var btnText = event.target.innerText       var originalURLValue = rootText.substring(btnText.length + 1)       console.log("THE URL IS=" + originalURLValue)    } To run the above program, save the file name “anyName.html(index.html)”. Right click on the file and select the option “Open with Live Server” in VSCode editor −OutputThis will produce the following output on console −On clicking the button, you will get the following output on console −

To remove the next element in jQuery, use the remove().ExampleFollowing is the code − Live Demo            Document                    cancel(X)          Demo                            cancel(X)          Demo                            cancel(X)          Demo                          $(".demo1").click(function () {       $(this).parent().next("hr").remove();       $(this).parent().remove();       return false;    }); To run the above program, save the file name “anyName.html(index.html)”. Right click on the file and select the option “Open with Live Server” in VSCode editor −OutputThis will produce the following output −Whenever you click the cancel(X), the jQuery will remove the element. This will produce the following output −

Yes, we can use jQuery to get values of selected checkboxes using the concept of input. We have to also use the :checked selector.ExampleFollowing is the code −            Document        Cricket        Listening Music Reading NewsPaper Click Me    $(document).ready(function () {       $("button").click(function () {          $('input[name="checkDemo"]:checked').each(function () {             console.log(this.value);          });       });    }); To run the above program, save the ... Read More