I have this simple code that speaks for itself.
<script language='javascript">
function check() {}
</script>
<div id="a">input type="text" name="b">
<input type="button" onClick=" check(); ">
All I want is that when I press the button, the text field gets a value updated to it.
I tried using b.value=" C " but it doesn't seem to work.
<script language="javascript">
function check() {
document.getElementById('txtField').value='new value here'
}
</script>
<input id="txtField" type="text" name="b"> <input type="button" onClick=" check(); ">
This will do. I gave it an ID, and used getElementById('txtField') using the id, and updated it's value.
You seem to be thinking that giving a form input a name attribute makes it addressable as though it were a global variable. It doesn't. There is a syntax for that, and you would have to use something like:
document.forms[0].b.value = "C";
in order to get to address it successfully. You are putting your form elements inside a form, aren't you?
Do it that way, or use an ID along with the getElementById method, as mplacona suggests.
