Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
Deprecated
This feature has been removed from the Web. Though some browsers may still support it, it is in the process of being dropped. Do not use it in old or new projects. Pages or Web apps using it may break at any time.
Summary
The __defineSetter__ method binds an object's property to a function to be called when an attempt is made to set that property.
Syntax
obj.__defineSetter__(sprop, fun)Parameters
-
sprop - A string containing the name of the property to be bound to the given function
-
fun - A function to be called when there is an attempt to set the specified property. This function takes the form
-
function (val) { . . . }-
val -
an alias for the variable that holds the value attempted to be assigned to
prop
-
Description
The __defineSetter__ method allows a setter to be defined on a pre-existing object.
Specifications
Not part of any specifications.
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | IE 11 | (Yes) | (Yes) |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | ? | (Yes) | (Yes) |