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25 wrz 2013 · var limit = 3; $('input.single-checkbox').on('change', function(evt) { if($('input.single-checkbox').siblings('input.single-checkbox:checked').length > limit) { this.checked = false; } });
21 kwi 2015 · I would like to limit number of checkboxes not with a fix number (i.e.2), but I want pre-select this limit. I'm able to limit in a fix way (working example)
var checkboxes = document.getElementsByName("favorite_pet"); var numberOfCheckedItems = 0; for(var i = 0; i < checkboxes.length; i++) { if(checkboxes[i].checked) numberOfCheckedItems++; } if(numberOfCheckedItems > 2) { alert("You can't select more than two favorite pets!"); return false; } } </script>
6 mar 2019 · If needed how would I limit the amount of check boxes that can be selected? In this exercise I could select all three of them, but lets think that you’re limited to only 1 topping. Thanks!
25 wrz 2024 · When you check or uncheck an ingredient's checkbox, a JavaScript function checks the total number of checked ingredients: If none are checked, the recipe name's checkbox is set to unchecked. If one or two are checked, the recipe name's checkbox is set to indeterminate.
Use the <input> element with the type checkbox to create a checkbox element. Place a checkbox inside a label element to improve the usablity and accessibility. Use checkbox.checked property or :check selector to test if a checkbox is checked. Get the value attribute to get the value of a checkbox.
20 sie 2024 · Unlock the power of advanced checkbox validation in JavaScript. This guide explores enforcing selections, limiting options, user input validation, and best practices.
