javascript - How to change System of Measurements on a Legacy Form -



javascript - How to change System of Measurements on a Legacy Form -

i have next form:

right now, values entered using english language scheme of measurements. need allow entry of metric values well.

here thinking:

add drop-down system unit select box english/metric depending on state of system unit select box, alter names of physical properties (gpm, psi, etc)

question:

so let's add together select box english/metric. how read state of box , how implement label-changing english language metric system? i.e. gpm -> m3h (meter cubed per hour), etc.

<select name="unit_system" id="unit_system"> <option value="english">english</option> <option value="metric">metric</option> </select> <script type="text/javascript"> $("#unit_system").change(function() { if ($('#unit_system').val() == "english") { $('.input_gpm').html('gpm'); } else if ($('#unit_system').val() == "metric") { $('.input_gpm').html('m3h'); } }); </script> <td class="input_gpm"><b>gpm</b></td>

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