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undefined OR null in set-constant

gwarser 2020-01-21 18:14:14 +01:00
parent de53e1e6f3
commit 3acc9ddd66
1 changed files with 5 additions and 5 deletions
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10
Resources-Library.md

@ -228,19 +228,19 @@ When used without parameters, will log calls to _`requestAnimationFrame()`_ to t
***
### set.js /
### set-constant.js [↪](https://github.com/gorhill/uBlock/blob/a94df7f3b27080ae2dcb3b914ace39c0c294d2f6/assets/resources/scriptlets.js#L394)
### set-constant.js [↪](https://github.com/gorhill/uBlock/blob/c7dc65fe33ed58ff2bad10ce4a8848b97c8591ce/assets/resources/scriptlets.js#L478)
Creates _property_ and initializes it to predefined value from set of available properties.
Scriptlet will succeed only when:
- original _property_ is `undefined` (scriptlet is called early enough) **OR**
- new _property_ written by `set.js` is `undefined` **OR**
- original _property_ is `undefined` (scriptlet is called early enough) or `null`<sup>[1.24.3b9](https://github.com/gorhill/uBlock/commit/c7dc65fe33ed58ff2bad10ce4a8848b97c8591ce)</sup> **OR**
- new _property_ written by `set.js` is `undefined` or `null`<sup>[1.24.3b9](https://github.com/gorhill/uBlock/commit/c7dc65fe33ed58ff2bad10ce4a8848b97c8591ce)</sup> **OR**
- type of original _property_ is equal to type of new _property_
Additionally, original _property_ (if exist) must not have getter.
Value set by scriptlet can be overwritten by page script when:
- current _property_ was not set to `undefined` **AND**
- new _property_ is not `undefined` **AND**
- current _property_ was not set to `undefined` or `null`<sup>[1.24.3b9](https://github.com/gorhill/uBlock/commit/c7dc65fe33ed58ff2bad10ce4a8848b97c8591ce)</sup> **AND**
- new _property_ is not `undefined` or `null`<sup>[1.24.3b9](https://github.com/gorhill/uBlock/commit/c7dc65fe33ed58ff2bad10ce4a8848b97c8591ce)</sup> **AND**
- type of original _property_ is different than type of new _property_
Parameters: