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JavaScript For...In Statement

JavaScript For...In Statement

The for...in statement loops through the properties of an object.

Syntax

for (variable in object)
  {
  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] + " ");
}

Try it yourself »

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