TypeError with HTML Element array

Question

Running the following code :

function inc_value_pvt()
{
    var max = 0;
    var pvtStunden = document.getElementsByName('pvtStunden');

    for(var i=0; i<=pvtStunden.length; i++)
    {
        max += parseInt(pvtStunden[i].value);
    }
    document.getElementById('stunden').value = max;
}

I always get this error message:

TypeError: pvtStunden[i] is undefined

Possible duplicate of Javascript: TypeError variable is undefined — tgogos
– tgogos, Commented Dec 20, 2017 at 9:35

Mamun · Accepted Answer · 2017-12-20 09:31:14Z

2

You are looping for one extra time.

for(var i=0; i<pvtStunden.length; i++)

answered Dec 20, 2017 at 9:31

Mamun

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