mirror of
https://github.com/chylex/TweetDuck.git
synced 2024-10-17 09:42:45 +02:00
25 lines
667 B
JavaScript
25 lines
667 B
JavaScript
// noinspection FunctionNamingConventionJS
|
|
|
|
/**
|
|
* Applies the ROT13 cipher to the selected input text.
|
|
*/
|
|
export function applyROT13() {
|
|
const activeElement = document.activeElement;
|
|
const inputValue = activeElement?.value;
|
|
if (!inputValue) {
|
|
return;
|
|
}
|
|
|
|
const selection = inputValue.substring(activeElement.selectionStart, activeElement.selectionEnd);
|
|
if (!selection) {
|
|
return;
|
|
}
|
|
|
|
// noinspection JSDeprecatedSymbols
|
|
document.execCommand("insertText", false, selection.replace(/[a-zA-Z]/g, function(chr) {
|
|
const code = chr.charCodeAt(0);
|
|
const start = code <= 90 ? 65 : 97;
|
|
return String.fromCharCode(start + (code - start + 13) % 26);
|
|
}));
|
|
}
|