Array filter and callback functions : Function « Language Basics « JavaScript DHTML






Array filter and callback functions

   
<html>
<head>
<title>Array filter and callback functions</title>
</head>
<body>
<script type="text/javascript">
function checkColor(element,index,array) {
  return (element >= 0 && element < 256);
}
var colors = new Array(  );
colors[0] = [0,262,255];
colors[4] = [0,0,255];
colors[5] = [-5,567,255];

var testedColors = new Array(  );
for (var i in colors) {
   testedColors[i] = colors[i].filter(checkColor);
   document.write(testedColors[i]);
}


</script>
</body>
</html>

   
    
    
  








Related examples in the same category

1.Show Arguments
2.Function That Wraps Document.Write, Adding a Line Break
3.setTimeout() with a pointer to a function
4.Define function in JavaScript
5.Funciton with arguments
6.Pass variables to a function, and use these variable values in the function
7.Function that returns a value
8.A function with arguments, that returns a value
9.A Function Can Be Set Up to Accept a Variable Number of Arguments
10.Accepting Either One or No Arguments
11.Functions That Return Values Can Be Used in Expressions
12.Using an Argument with a JavaScript Function
13.Declaring a Function in the 'head' Block
14.Passing by Reference Versus Passing by Value
15.A Function Definition
16.Using the Function Object
17.Passing the Form Object as a Parameter
18.Calling a Function from an Event Handler
19.A Function's arguments and caller Properties
20.Variable Scope Workbench Page
21.Calling a Generalizable Function
22.Simplest function
23.Pass string value in and return string value out
24.A function with only one statement
25.Call your function
26.Nested function call
27.Define a function to accept the string value
28.Call a javascript function with javascript:void()
29.Return an incremented value
30.Check the function parameters
31.Save returned value from a function to a variable
32.Invoking third argument as function
33.Function is Object
34.Call function in body onload event