js htmlEntities

String.prototype.htmlEntities = function( reverse = 0 ){
	let thisString = this;

	let entities = [' ', '<', '>', '"', '\'', '¢', '£', '¥', '€', '©', '®'];
	let htmlEntities = ['&nbsp;', '&lt;', '&gt;', '&quot;', '&apos;', '&cent;', '&pound;', '&yen;', '&euro;', '&copy;', '&reg;'];

	if( reverse == 0 ){
		thisString = thisString.replace(/&/g, 'ΠπϖⲠⲡhE');
		for(let i = 0; i < 11; i++){
			thisString = thisString.replace( new RegExp( entities[i] , 'g'), htmlEntities[i] ).replace(/ΠπϖⲠⲡhE/g, '&amp;');
		};
	}else{
		entities.push('&');
		htmlEntities.push('&amp;');
		for(let i = 0; i < 12; i++){
			thisString = thisString.replace( new RegExp( htmlEntities[i] , 'g'), entities[i] );
		};
	};
	return thisString;
};

/*

EXAMPLE:

	>	'<span>hi</span>'.htmlEntities()
	<	'&lt;span&gt;hi&lt;/span&gt;'

	>	'&lt;span&gt;hi&lt;/span&gt;'.htmlEntities(1) //USE 1 FOR REVERSE
	<	'<span>hi</span>'

*/