version added: 1.0

notStrictEqual( actual, expected [, message ] )

A strict comparison, checking for inequality.

name description
actual Expression being tested
expected Known comparison value
message (string) A short description of the assertion


The notStrictEqual assertion uses the strict inverted comparison operator (!==) to compare the actual and expected arguments. When they aren’t equal, the assertion passes; otherwise, it fails. When it fails, both actual and expected values are displayed in the test result, in addition to a given message.

equal() can be used to test equality.

strictEqual() can be used to test strict equality.


The simplest assertion example:

QUnit.test( "a test", function( assert ) {
  assert.notStrictEqual( 1, "1", "String '1' and number 1 have the same value but not the same type" );