Does javascript allow changing HTML radio button value?

Question

I don't know if it is possible to generate using this way.
I have a set of dynamic radio buttons.
When user click on add row radio button, the Javascript will generate the value for the row radio button.

function addRow(tableID) {
	var table = document.getElementById(tableID);

	var rowCount = table.rows.length;
							// limit the user from creating fields more than your limits
		var row = table.insertRow(rowCount);
		var colCount = table.rows[0].cells.length;

		for(var i=0; i<colCount; i++) {
			
			var newcell = row.insertCell(i);
			newcell.innerHTML = table.rows[1].cells[i].innerHTML; //row[which table u need to duplicate]
			table.rows[rowCount].cells[0].innerHTML = rowCount;
			}


}

<input type="radio" name="BX_related[]" size="1" value="How to change this value using javascript?">

For example, I have dynamic radio button and I added 3 row for my radio button. Then I click on second row. The value will show in 1st row and rest of it is a Undefined offset error. So I think if can I insert the value when I crated a new row for user maybe can solve the problem but I don't know the correct ways. — Jacqueline Goh
– Jacqueline Goh, Commented Aug 26, 2015 at 8:51

hola · Accepted Answer · 2015-08-26 08:08:06Z

3

With a reference to your input element you can change value like so:

inputRef.value = 'Whatever you want';

answered Aug 26, 2015 at 8:08

hola

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3 Comments

Jacqueline Goh Over a year ago

Sorry I not so familiar on Javascript. I just try to insert id="radio" value="1" for my HTML radio button. Javascript var radio = document.getElementById(radio); radio.value = rowCount; //rowCount stand for how many row was user clicked. Error : Uncaught TypeError: Cannot set property 'value' of null

hola Over a year ago

In the document.getElementById what does the radio variable contain? Or did you mean to pass it in as a string?

Jacqueline Goh Over a year ago

suppose "1" because I preset the value equal to 1 and I want to change the radio value according the user has added the row.

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