Set the disabled property to true in jQuery −ExampleFollowing is the code − Live Demo         Document             $("#change").click(function (buttonEvent) {     buttonEvent.preventDefault();     $('#showTxtBoxHide').prop("disabled", 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 VS Code editor −OutputThe output is as follows −The text box property is disabled. To enable, you need to click the button −

To populate select list with jQuery, use for loop along with append() and append the options to the already created select.Let’s say we have the following select with options − John David ExampleFollowing is the code to append more number of options using append() − Live Demo            Document           John       David     $(document).ready(function () {    var data = [       { "name": "Bob", "customerName": "Bob" },       { "name": "Mike", "customerName": "Mike" }    ];    for (var index = 0; index

Let’s say we have the following button −On click of the above button, call the function() with on() −$('#buttonId').on('click', function () {    displayTheData(); })The above function is using the html() to display the following div −    I am inside the div tag... ExampleFollowing is the complete code to print div content − Live Demo            Document           I am inside the div tag...        I am not inside the div tag...            $('#buttonId').on('click', function () ... Read More

Let’s say the following is our first select −    John    David    Bob    Mike    Sam    Carol Following is our second select −    David    Mike    Carol We need to remove the options in the first select, which are similar to options in the second select. For this, use val(). Following is the complete code −Example Live Demo              Document           John       David       Bob       Mike       Sam       Carol               David       Mike       Carol        $('#remaining_name > option').each(function (i, el) {       var value = $(el).val();       $('#all_present_name > option[value="' + value + '"]').remove();    }); OutputThe output is as follows −

To fetch value from alert pop up, use alert(). At first, use prompt() to input the value from user. Following is the code −Example Live Demo Document    var value = prompt("Please enter an integer value");    var multiplyBy10=10*value;    alert("Result after multiplying by 10 = "+ multiplyBy10); To run the above program, save the file name “anyName.html(index.html)” and right click on the file. Select the option “Open with Live Server” in VS Code editor −OutputThis will produce the following output −Put an integer value and click the OK button.After clicking the OK button, the snapshot is as follows −

Let’s the following is our input type, wherein the user will search −Now, use hide() and show() to display only relevant search and hide rest. For example, on typing “Ja”, related keywords like “Java” and “JavaScript” should be visible because it begins with “Ja”.Example Live Demo Document Enter the keyword.. JavaScript John Smith Java David Miller -1) {             $(this).show();             $(this).prev('.subjectName').last().show();          } else {             $(this).hide();     ... Read More

Let’s say the following is our table with product quantity records − qty: qty: qty: qty: Let us now hide using the hide() method. Following is the code −Example Live Demo Document qty: qty: qty: qty:    $('.hideRowContainingZeroValue input').filter(function(){       return +this.value === 0;    }).closest("tr").hide() To run the above program, save the file name “anyName.html(index.html)” and right click on the file. Select the option “Open with Live Server” in VS Code editor.OutputThis will produce the following output −

Let’s say the following is our input type with value, “John Smith” −To change, use the attr() method −$('#changeTheName').attr('value', 'Please enter your name.......');You need to use the concept of attr(). Following is the code −Example Live Demo Document    $('#changeTheName').attr('value', 'Please enter your name.......'); To run the above program, save the file name “anyName.html(index.html)” and right click on the file. Select the option “Open with Live Server” in VS Code editor.OutputThis will produce the following output −

To set an element and it’s text, use the text() method in jQuery. With that, use the :nth-child selector to place it at a particular position. Following is the code −Example Live Demo Document JavaScript MySQL MongoDB Java C#    $('h1:nth-child(4)').text("Python"); To run the above program, save the file name “anyName.html(index.html)” and right click on the file. Select the option “Open with Live Server” in VS Code editor.OutputThis will produce the following output −

To refresh page, use the location.reload() in JavaScript. The sample JavaScript code is as follows −Example Live Demo Document UserName: Password: Refresh Page    $('#RefreshPage').click(function() {       location.reload();    }); To run the above program, save the file name “anyName.html(index.html)” and right click on the file. Select the option “Open with Live Server” in VS Code editor.OutputThis will produce the following output −After filling the form, the snapshot is as follows −When you click the button “Refresh Page”, the page will refresh and the following output is visible −