Modifying OPTGROUP Element Labels : Option Select ComboBox « Form Control « JavaScript DHTML






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Modifying OPTGROUP Element Labels

 <HTML> <HEAD> <TITLE>Color Changer 3</TITLE> <SCRIPT LANGUAGE="JavaScript"> var regularLabels = ["Reds","Greens","Blues"] var naturalLabels = ["AA","VV","BB"] function setRegularLabels(list) { var optGrps = list.getElementsByTagName("OPTGROUP") for (var i = 0; i < optGrps.length; i++) { optGrps[i].label = regularLabels[i] } } function setNaturalLabels(list) { var optGrps = list.getElementsByTagName("OPTGROUP") for (var i = 0; i < optGrps.length; i++) { optGrps[i].label = naturalLabels[i] } } function seeColor(list) { var newColor = (list.options[list.selectedIndex].value) if (newColor) { document.bgColor = newColor } } </SCRIPT> </HEAD> <BODY onUnload="document.forms[0].reset()"> <FORM> <P>Choose a background color: <SELECT name="colorsList" onChange="seeColor(this)"> <OPTGROUP ID="optGrp1" label="group 1"> <OPTION value="#ff9999">Light Red <OPTION value="green">green <OPTION value="red">Red <OPTION value="yellow">yellow </OPTGROUP> <OPTGROUP ID="optGrp2" label="group 2"> <OPTION value="#ccff66">Light Green <OPTION value="yellow">yellow <OPTION value="green">green <OPTION value="red">red </OPTGROUP> <OPTGROUP ID="optGrp3" label="Blues"> <OPTION value="#ccffff">Light Blue <OPTION value="#66ccff">Medium Blue <OPTION value="#0000ff">Bright Blue <OPTION value="#000066">Dark Blue </OPTGROUP> </SELECT></P> <P> <INPUT TYPE="radio" NAME="labels" CHECKED onClick="setRegularLabels(this.form.colorsList)">Regular Label Names <INPUT TYPE="radio" NAME="labels" onClick="setNaturalLabels(this.form.colorsList)">Label Names from Nature</P> </FORM> </BODY> </HTML>








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