JSFiddle - React, Tailwind, and code Playground

by Johan Vandeplas

HTML

<textarea id='tf'>Welcome* to jQuery</textarea>

JavaScript

$("#tf").on('keyup', function(){
    var pos = [],
        lastOc = 0,
        p = $(this).val().indexOf('*',lastOc);
    
    while( p !== -1){
        pos.push(p);
        lastOc = p +1;
        p = $(this).val().indexOf('*',lastOc);
    }
    console.log(pos);
});