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Perform a soft-check to see if a dependency is available... |
Syntax
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var available = Check(file, ver); |
Parameters
| Parameter | Type | Mandatory | Notes | API Version |
|---|---|---|---|---|
| file | String Array of String |  | The name of the file to check, or an array of file names. File name should not include path - it should just be the name and extension of the file, for example: "foo.js" If an array is passed in, all files will be checked for the same ver (if specified). | 1.0 |
| ver | Number Constant |  | The version of the dependency, or one of the following constants:
Default: Check.ANY_VERSION | 1.0 |
Return values
| Value | Type | Notes | API Version |
|---|---|---|---|
true | Boolean | The specified requirements were met | 1.0 |
false | Boolean | One or more of the specified requirements was not met | 1.0 |
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
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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
} |
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Availability
Requires:
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ContentsJump to:
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Dependency CheckingTopics:
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