Question

113

HTML Select Option Validation

rated 0 times [ 116] [ 3] / answers: 1 / hits: 29920 / 11 Years ago, wed, january 1, 2014, 12:00:00

How would I alert out that the selection must not be be blank in plain javascript?

Here is my code for my option menu:

            <div class=interest>

            <label for=interest>Interest Area *</label>



            <select name=interest>

            <option value=blank></option>

            <option value=option1> EXAMPLE 2 </option>

            <option value=option2> EXAMPLE 3 </option>

            <option value=option3> EXAMPLE 4 </option>

            </select>

            </div>

Thanks in advance

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juancarlos

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3 Years ago

answered 11 Years ago jarettajb · Accepted Answer

document.getElementsByName('interest')[0].onchange = function() {

     if (this.value=='blank') alert('Select something !');

}

or in a submit handler or similar, just check the value

if ( document.getElementsByName('interest')[0].value == 'blank' )

    alert('Select something !');