The HTMLSelectElementtype has the following useful properties: selectedIndex- returns the zero-based index of the selected option. A javascript solution would be:- For just two (2) radio buttons: let radios = document.getElementsByName (nameProperty); let value = "1";//value you want to compare radio with if (radios [0].value == value) { radios [0].checked = true; }else { radios [1].checked = true; } for three or more radio buttons: How to add double quotes around string and number pattern? The value attribute is a string containing the radio button's value. For example: First, select the button with #btn id, output element with the #output id, and all the radio buttons with the name size: Second, register a click event listener on the button element: Third, iterate over the radio buttons and get the value of the selected radio button: If a radio button is checked, its checked property is true. For example, if your form needs to ask the user for their preferred contact method, you might create three radio buttons, each with the name property set to contact but one with the value email, one with the value phone, and one with the value mail. The user never sees the value or the name (unless you expressly add code to display it). The checked property of the radio button is responsible to selected it once it finds the suitable value from the current state. Thanks for reading I hope it helps. If the attribute already exists on the element, the value is updated, otherwise, a new attribute is added with the specified name and value. Output 2. Thanks for contributing an answer to Stack Overflow! Only one radio button in the group can be selected. myRadio.checked = true. The differences are smaller in the newest browsers. Your experience on this site will be improved by allowing cookies. How to uncheck and check a radio button using Javascript/jQuery? Can dialogue be put in the same paragraph as action text? document.getElementById(malegender).checked returns boolean value true or false. the attribute because it's a best practice to set boolean attributes without a because we want the first and only select element. Spellcaster Dragons Casting with legendary actions? This is because only one radio button in a group can ever be selected at once, and the user agent automatically deselects others each time a new one is marked as checked. `
How to use javascript variables, JQuery selector? The value is never shown to the user by their user agent. In the above examples, you may have noticed that you can select a radio button by clicking on its associated