sandy1028 Posted March 3, 2008 Share Posted March 3, 2008 How to disable the value 4 andvalue 5 from second listbox when only C is selected from the 1st list box. Now second list is disabled. I have to enable the list box but only values of 2nd list box should be disabled when C is selected. <html> <head> <script type="text/javascript"> function checkSelect1(selVal) { alert(selVal); sel2 = document.getElementById("select2"); if (selVal=="C" || selVal=="value5") { sel2.disabled = false; } else { sel2.disabled = true; } } </script> </head> <body> <select name="select1" onchange="checkSelect1(this.value);"> <option value="R">1</option> <option value="Q">2</option> <option value="S">3</option> <option value="C">4</option> <option value="--">5</option> </select> <select name="select2" disabled> <option value="value1">1</option> <option value="value2">2</option> <option value="value3">3</option> <option value="value4">4</option> <option value="value5">5</option> </select> </body> </html> Link to comment https://forums.phpfreaks.com/topic/94130-list-box/ Share on other sites More sharing options...
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