Constructor
new MessageHandler()
Create new postMessage handler
Example
new MessageHandler().addListener(data => console.log(data)).listen()Methods
addListener(f) → {this}
Add a callback function to call on all received message
Parameters
| Name | Type | Description |
|---|---|---|
f |
function | Function to add to the callback list |
Returns
- Type
- this
logMessages(f) → {this}
Change the logger function, by default the message are printed in the console
Parameters
| Name | Type | Description |
|---|---|---|
f |
function | The new log function |
Returns
- Type
- this
removeListener(f) → {this}
Remove a callback function
Parameters
| Name | Type | Description |
|---|---|---|
f |
function | Function to remove from the callback list |
Returns
- Type
- this
waitForMessage(filteropt) → {Promise.<String>}
Return a promise that resolve with the next message data.
Example
const mh = new MessageHandler().listen()
const data = await mh.waitForMessage((data, origin) => origin == "https://victim.example")
console.log(data) Parameters
| Name | Type | Attributes | Description |
|---|---|---|---|
filter |
function |
<optional> |
A filter function, taking data and origin as parameter and returning a boolean whether or not resolving to the message |
Returns
message data
- Type
- Promise.<String>