Question

I have the following code:

<form>
    <input type="text" id="field1" name="field1" value="first value" />
    <input type="text" id="field2" onkeyup="showRSS(this.value, this.alt)" value="" alt="test">
</form>

Within the showRSS() onkeyup function I need to call the value from the first input field (id="field1"). How can I do that?

Answer 1

Use its ID with document.getElementById():

So if you want to pass it as the third argument to showRSS():

    <input type="text" id="field2" onkeyup="showRSS(this.value, this.alt, document.getElementById('field1').value)" value="" alt="test">

Or if you want to get it from within showRss():

function showRSS( ... )
{
    var field1 = document.getElementById('field1').value;
}