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To get the multiple checkbox values from the HTML form, the jQuery ?validateForm? function() is utilized, which will trigger the form submission. Furthermore, initialize the variable that stores selected items results by using the ?map()? function. Then, ?document. getElementById().

Multiple Checkbox Validation in Javascript The options in the checkboxes are stored as an array called options. The querySelectorAll method is used to select all the checkbox elements from the DOM. This method is similar to thegetElementById() method but uses the tag names to select the elements in the DOM.

You can also use the below code to get all checked checkboxes values. <script> document.getElementById('btn').onclick = function() { var markedCheckbox = document.querySelectorAll('input[type="checkbox"]:checked'); for (var checkbox of markedCheckbox) { document.body.append(checkbox.value + ' '); } } </script>

To get all the values from the checked checkboxes, you need to add the square brackets ( [] ) after the name of the checkboxes. When PHP sees the square brackets ( [] ) in the field name, it'll create an associative array of values where the key is the checkbox's name and the values are the selected values.

To select multiple checkboxes in Excel, do one of the following: Press and hold the Ctrl key, and then click on the checkboxes you want to select.

Check Range (Chrome) Click the first checkbox, press and hold Shift, then click the last checkbox. Everything in between will change its state to what happened to the first checkbox, if it was checked everything else will be checked, if it was unchecked on click then everything in the range will uncheck.

SelectListItem class is used for getting the values of checkboxes and populated to a viewBag object by looping over the SelectListItem. A view is usually created using the HTML. BeginForm function, where we use values from class SelectListItem which is used as a Model. The HTML.