random (JavaScript)
Generates a pseudorandom number greater than or equal to 0.0 and less than 1.0.
Defined in
Math (JavaScript)Syntax
random() : double| Return value | Description |
|---|---|
double |
A random number in the range 0.0 (inclusive) through 1.0 (exclusive). |
Usage
The first call to this method creates
a new pseudorandom-number generator with a 48-bit seed based on the
current time, as if creating an object with:
new java.util.Random()Subsequent calls generate pseudorandom numbers with (approximately) uniform distribution.
Examples
This is the value formula for a list box. It creates a list of 10 items with random integers in the range 0-100.var a = new Array();
for(var i=0; i<10; i++) {
var n = Math.round(Math.random() * 100);
a.push(n.toString());
}
return a