#console: assert() method

assert writes an error message to the console if the assertion is false. If the assertion is true, nothing happens.

#Syntax

assert(assertion: boolean, val1, val2, ...): undefined;

#Parameters

#assertion

Any boolean expression. If the assertion is false, a generic message indicating assertion failure is written to the console.

#val1, val2, ...

A list of JavaScript values to output.

#return value

None(undefined).

#Compatibility

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