ilikephp Posted January 2, 2011 Share Posted January 2, 2011 Hello! I have this code that creates dependent combo box How can I add: Select option" before the user selects option 2a, 2b or 2c "select option" should have no value Thank you, <html> <head> <title>Dependent Combo Boxes</title> </head> <body> <script type='text/javascript'> function update(a) { if(a==1) { document.getElementById("destination").innerHTML="<select name='combo2'><option>option 1 a</option><option>option 1b</option><option>option 1c</option></select>"; } if(a==2) { document.getElementById("destination").innerHTML="<select name='combo2'><option>option 2 a</option><option>option 2b</option><option>option 2c</option></select>"; } if(a==3) { document.getElementById("destination").innerHTML="<select name='combo2'><option>option 3 a</option><option>option 3b</option><option>option 3c</option></select>"; } } </script> <form name='form1'> <table> <tr><td><select name='combo1' onchange='update(this.value)'> <option value='1'>option 1</option> <option value='2'>option 2</option> <option value='3'>option 3</option> </select> </td></tr> <tr><td> <span id='destination'> <select name='combo2' disabled='disabled' > <option>Select combo 1 first</option> </select> </span> </td></tr> </form> </body> </html> Link to comment https://forums.phpfreaks.com/topic/223206-combo-box/ Share on other sites More sharing options...
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