Here is a simple code snippet that I have written.
<script language='javascript">
function check() {}
</script>
<div id="a">input type="text" name="b">
<input type="button" onClick=" check(); ">
My goal is to update the value of the text field when the button is pressed.
I attempted using b.value=" C ", but it did not produce the desired result.
<script language="javascript">
function updateText() {
document.getElementById('textField').value='updated value here'
}
</script>
<input id="textField" type="text" name="c"> <input type="button" onClick=" updateText(); ">
By assigning an ID to the input field and using getElementById('textField'), I was able to change its value dynamically.
It may appear that assigning a name attribute to a form input allows it to be accessed like a global variable, but that is not the case. To properly address it, you can use:
document.forms[0].b.value = "C";
Make sure your form elements are nested within a form tag. Alternatively, consider using an ID in combination with getElementById method as suggested by mplacona.
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