Full version: jsB@nk » Form » No Duplicates
URL: https://www.javascriptbank.com/no-duplicates.html
Prevents you from selecting the same choice when choosing from two different pulldown menus.
Full version: jsB@nk » Form » No Duplicates
URL: https://www.javascriptbank.com/no-duplicates.html
<SCRIPT LANGUAGE="JavaScript">// Denis Dijon (ddijon@hotmail.com)<!-- Beginvar OptLstTxt = new Array;var OptLstVal = new Array;var OptLen = 0;function NoDupl(SelObjFrom, SelObjTo) {var OldToVal = SelObjTo.options[SelObjTo.selectedIndex].value;if (OptLen == 0) {OptLen = SelObjFrom.length;for (var i = 1; i < OptLen; i++) {OptLstTxt[i] = SelObjFrom.options[i].text;OptLstVal[i] = SelObjFrom.options[i].value; }}var j = 1;for (var i = 1; i < OptLen; i++) {if (OptLstVal[i] != SelObjFrom.options[SelObjFrom.selectedIndex].value) {if (j == SelObjTo.length) {SelObjTo.options[j] = new Option(OptLstTxt[i]);}else {SelObjTo.options[j].text = OptLstTxt[i];}SelObjTo.options[j].value = OptLstVal[i];if (OptLstVal[i] == OldToVal) {SelObjTo.selectedIndex = j;}j++; }}if (SelObjTo.length > j)SelObjTo.options[(SelObjTo.length - 1)] = null;}// End --></script><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com-->Try to select the same color:<br><select name="Color_1" onChange="NoDupl(this,document.MForm.Color_2)"><option selected value=''>Select your first prefered color</option><option value='R'>Red</option><option value='J'>Yellow</option><option value='G'>Green</option><option value='B'>Blue</option></select><select name="Color_2" onChange="NoDupl(this,document.MForm.Color_1)"><option selected value=''>Select Second Prefered color</option><option value='R'>Red</option><option value='J'>Yellow</option><option value='G'>Green</option><option value='B'>Blue</option></select></form><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com-->