In javascript chained select menus are available.first
select menu is worked and others are disabled.when we
select any one option then the next select menu will worked
having option releated to selcted in first select menu.How
it possible? what is the coading of this programme?
Answer Posted / mangala bhat
It possible by using onChange event.
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01
Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script type="text/javascript">
function change()
{
var cat = document.getElementById("category");
if(cat.value =="Javascript")
{
document.getElementById("javaScript").removeAttribute("disabled");
document.getElementById("java").setAttribute("disabled","true");
}
else
{
document.getElementById("javaScript").setAttribute("disabled","true");
document.getElementById("java").removeAttribute("disabled");
}
}
</script>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8">
<title>Html menu</title>
</head>
<body>
Category :<select id="category" name = "category"
onChange=change();>
<option value="Select">Select ...</option>
<option value="Javascript">Javascript</option>
<option value="Java">Java</option>
</select>
JavaScript:<select id="javaScript" name = "javaScript"
disabled="disabled" >
<option value="JS Objects"> JS Objects</option>
<option value = "JS Advanced">JS Advanced</option>
</select>
Java:<select id="java" name = "java" disabled="disabled" >
<option value="Java Swings"> Java Swings</option>
<option value = "Java Collections">Java Collections</option>
</select>
</body>
</html>
| Is This Answer Correct ? | 6 Yes | 1 No |
Post New Answer View All Answers
how to read and write a file using JavaScript?
What is array explain it?
Is javascript object oriented?
What are the datatypes in javascript?
What is the difference between the operators '==' and '==='?
What do mean by NULL in Javascript?
Is array a data type in javascript?
How do we get javascript onto a web page?
How would you organize your javascript code?
Why is javascript good for websites?
What is a module code?
What is npm repository?
What is the potential disadvantage of using a sticky session?
Explain the typeof operator?
Can you assign a anonymous function to a variable?