CompositionEvent.data
 The data read-only property of the CompositionEvent interface returns the characters generated by the input method that raised the event; its exact nature varies depending on the type of event that generated the CompositionEvent object. 
Syntax
myData = compositionEvent.data
Value
A DOMString representing the event data:
-  For 
compositionstartevents, this is the currently selected text that will be replaced by the string being composed. This value doesn't change even if content changes the selection range; rather, it indicates the string that was selected when composition started. -  For 
compositionupdate, this is the string as it stands currently as editing is ongoing. -  For 
compositionendevents, this is the string as committed to the editor. 
Specifications
| Specification | 
|---|
| UI Events  # dom-compositionevent-data  | 
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
data | 
43  | 
12  | 
9  | 
9  | 
30  | 
5  | 
43  | 
43  | 
9  | 
30  | 
5  | 
4.0  | 
See also
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
    https://developer.mozilla.org/en-US/docs/Web/API/CompositionEvent/data