JavaScript Code: functionchecked(){if($('#check').is(':checked')){alert('Checked');}else{alert('Not Checked');}} Output: Thechecked()method gets executed in the code given above if you click on thebuttontitledSubmit. This method gets the first element whoseidattribute’s value ischeck...
1、function checked(){ var isChecked = false; $("input[@type=checkbox]").each( function(){ if($(this).attr("checked")){ isChecked=true; return; } }) if(!isChecked){ alert("请至少选择一条记录进行操作!"); } return isChecked; } 2、funcion checked2{ var isChecked=$("id").at...
A checkbox (check box, tickbox, tick box) is a graphical widget that permits the user to make a binary choice, i.e. a choice between one of two possible mutually exclusive options. For example, the user may have to answer 'yes' (checked) or 'no' (not checked) on a simple yes/no...
if($('#R1').val()=="1"){ $('#R1').prop("checked",true); } if($('#R2').val()=="1"){ $('#R2').prop("checked",true); } }) function checkbox(obj)//根据checked事件改变value值 { if(obj.checked){ obj.value=1; }else{ obj.value=0; } } function checkspell(){//给t...
chkbox.checked=true; lnk.parentNode.appendChild(chkbox); 以上代码在IE7下,生成的Checkbox无法正确的打上勾。 原因是chkbox控件还没初始化(appendChild),就开始操作它的结果 据此将代码改为即可正确显示: varchkbox=document.createElement("INPUT");
Topic: JavaScript / jQueryPrev|NextAnswer: Use the jQuery prop() method & :checked selectorThe following section describes how to track the status of checkboxes whether it is checked or not using the jQuery prop() method as well as the :checked selector....
$(function() { $("#btnCheck").click(function() { varisChecked = $("#chkPassport").is(":checked"); if(isChecked) { alert("CheckBox checked."); }else{ alert("CheckBox not checked."); } }); }); Screenshot Browser Compatibility...
How do you check if an HTML form checkbox field is checked in JavaScript?Craig Buckler
How to make field required with JavaScript if checkbox is checked March 13, 2015 Really simple solution that will allow you to make fields required below Fields need to be required if checked: document.getElementById("needRequired").addEventListener('change', function(){ document.getElementBy...
In this article, we will introduce checkbox validation in JavaScript using the checked property of the input element. Use the checked Property to Validate the Checkbox in JavaScript The input element in JavaScript is used to take input from the user. This can be used inside forms as well. It...