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jquery way of getting cursor current position (`selectionStart`), without hardcoding element ID. https://www.geeksforgeeks.org/how-to-insert-text-into-the-textarea-at-the-current-cursor-position/
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| /* | |
| https://www.geeksforgeeks.org/how-to-insert-text-into-the-textarea-at-the-current-cursor-position/ | |
| https://stackoverflow.com/questions/4069982/document-getelementbyid-vs-jquery | |
| */ | |
| $(e.selector)[0].selectionStart | |
| // use selectionEnd to get delta of selected text | |
| $(e.selector)[0].selectionEnd |
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