convert occurrence of # in regex javascript code example

Example 1: javascript regex replace

const search = 'duck'
const replaceWith = 'goose';

const result = 'duck duck go'.replaceAll(search, replaceWith);

result; // => 'goose goose go'

Example 2: javascript replace period

var lotsofPeriods="How... are. you?";
var noPeriods = lotsofPeriods.replace(/./g,"");//"How are you?"