Kilograms to Pounds with select

by Ankit Patidar

HTML

<label> Weight:</label>
<input type="text" id="weight_value" />
<select id="weight_unit" />
   <option value="lbs">lbs</option>
   <option value="kg">kg</option>
</select>

JavaScript

var kg = 0.45359237
$(document).ready(function() {
    $("#weight_unit").change(function() {
        if ($(this).val() == "kg") {
            $("#weight_value").val( $("#weight_value").val()*kg)
        } else {
            $("#weight_value").val( $("#weight_value").val()/kg)
        }
    });
});