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Check()

Perform a soft-check to see if a dependency is available...

 

Syntax

var available = Check(file, ver);

Parameters

ParameterTypeMandatoryNotesAPI Version
file

String

Array of String

(tick)

The name of the file to check, or an array of file names.

Must match the value of the 'file' property specified in the Self Descriptor Object of the file you want to check.

If an array is passed in, all files will be checked for the same ver (if specified).

1.0
ver

Number

Constant

(error)

The version of the dependency, or one of the following constants:

Default: Check.ANY_VERSION

1.0

Return values

ValueTypeNotesAPI Version
trueBooleanThe specified requirements were met1.0
falseBooleanOne or more of the specified requirements was not met1.0

Notes

This function is similar to Check.has() with some notable differences:

  • Check() allows an array of filenames in the first parameter, Check.has() does not
  • Check() does not attempt to autoload missing files, Check.has() does (unless told not to)

Example

if (Check("foo.js")) {
  // do stuff that relies on foo.js (any version)
}
 
if (Check(["bar.js", "baz.js"], 1.2)) {
  // do stuff that requires v1.2 of bar.js and v1.2 of baz.js
}
 
if (Check("foo.js", Check.NOT_LOADED)) {
  // do stuff that relies on foo.js being unavailable
}
Availability BETA

Requires:

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