how to change second drop down list on change of first drop down list option

HTML <select name=”select11″ id=”select11″> <option value=”1″>Fruits</option> <option value=”2″>Animals</option> <option value=”3″>Birds</option> <option value=”4″>Cars</option> </select> <select name=”select12″ id=”select12″> <option value=”1″>Litchi</option> <option value=”1″>Mango</option> <option value=”1″>Orange</option> <option value=”2″>Lion</option> <option value=”2″>Fox</option> <option value=”2″>Bear</option> <option value=”3″>Parrot</option> <option value=”3″>Hawk</option> <option value=”4″>Maruti</option> </select> JAVASCRIPT $(“#select11”).change(function() { if($(this).data(‘options’) ==…

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how to calculate value of two textfield and display its sum in third textfield autmotatically

hi,friends i want to show the trick of how to calculate the value of two text-field and got its sum in third text-field automatically and show sum when we type some value in second text-field. JAVASCRIPT <script> function sum() { var…

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