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| Excerpt |
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Backport allows you to check the status of any what alterations, if any, have been made to a JS API feature so that your script can act accordingly. |
Availability
Backport.js v0.1 and above
Syntax
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var returnValue = backport("featureName"name); |
Parameters
| Parameter | Type | Mandatory | Description | Backport version |
|---|---|---|---|---|
| featureNamename | String |  | The name (key) of the feature as a string (in quotes). | 0.1 |
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It's important to remember that Javascript uses type coercion - see Examples below for more information.
Examples
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var status = backport("orderDroid"); // orderDroid() was added in Warzone 3.2
// basic type coercion examples
if (status) { // the feature exists
// status could be true, -1 or 1
}
if (!status) { // the feature does not exist
// status could be null or undefined
}
// remember that == (equality operator) also type coerces!
if (status == true) {
// status could be true, -1 or 1
}
if (status != true) {
// status could be null or undefined
}
if (status == null) {
// status could be null or undefined
}
// use === (strict equality operator) if you need to check a specific value
if (status === -1) { // the feature was added by a backport script
// status must be exactly -1
}
if (status === null) { // a deprecated feature was removed
// status must be exactly null
}
if (status === true) { // the native, unaltered feature is present
// status must be exactly true
} |
See also
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- Listing API features – get a list of names for all defined JS API features
- How does Backport work? – understand how all this works under the hood