Node.js assert.notEqual() Method
Example
If two values are equal, an error is thrown and the program is terminated:
var assert = require('assert');
assert.notEqual(50, 70); //OK
assert.notEqual(50,
50); /*AssertionError: 50 != 50
*/
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Definition and Usage
The assert.notEqual() method tests if two values are NOT equal, using the != operator.
If the two values are equal, an assertion failure is being caused, and the program is terminated.
To compare the values using the stricter !== operator, use the assert.notStrictEqual() method.
Syntax
assert.notEqual(value1, value2, message);
Parameter Values
| Parameter | Description |
|---|---|
| value1 | Required. Specifies the first value to be compared |
| value2 | Required. Specifies the second value to be compared |
| message | Optional. Specifies the error message to be assigned to the AssertionError. If omitted, a default message is assigned |
Technical Details
| Return Value: | None |
|---|---|
| Node.js Version: | 0.1.21 |
More Examples
Example
Using the message parameter:
var assert = require('assert');
assert.notEqual(50, 50, "My message goes here");
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