JavaScript For...In Statement
The for...in statement loops through the properties of an object.
Syntax
for (variable in object)
{
code to be executed
}
{
code to be executed
}
Note: The code in the body of the for...in loop is executed once for each property.
Example
Looping through the properties of an object:
Example
var person={fname:"John",lname:"Doe",age:25};
var x;
for (x in person)
{
document.write(person[x] + " ");
}
var x;
for (x in person)
{
document.write(person[x] + " ");
}