This JavaScript program use switch case and radio button for change webpage background color.When you on-click radio button then radio button pass the value to JavaScript function . Switch case compare the value with the case which value is similar to the case ,then change webpage background color .
Program :
Output :
Program :
<html><head></head> <body> <script language="JavaScript"> function colors(col) { switch(col) { case 'red': document.bgColor="#FF0000"; break; case 'green': document.bgColor="#00FF00"; break; case 'blue': document.bgColor="#0000FF"; break; } } </script> <form name=”form1” method=”post” action=””> <p> <label> <input type="radio" name=”Colors” value=”radio” onClick="colors('red')"> Red</label> <br> <label> <input type="radio" name=”Colors” value=”radio” onClick="colors('green')"> Green</label> <br> <label> <input type="radio" name=”Colors” value=”radio” onClick="colors('blue')"> Blue</label> <br> </p> </form> </body></html>
Output :
