content.js

setInterval(function(){
	if (document.activeElement.name == "add_comment_text_text"){

		document.activeElement.addEventListener('keydown', commentFunction);
	}
}, 500);

var commentFunction = function(e){
	var e = window.event||e;
	var key = e.keyCode ? e.keyCode : e.which;

	if (key === 13 && isOffensive(document.activeElement.value) && !window.confirm("Are you sure you want to comment this?")){
		e.preventDefault()
		e.stopPropagation();
		return false;
	}
}

var clickedPost = function()
{
	console.log(event);
	if (isOffensive(document.querySelectorAll('input[name="xhpc_message"]')[0].value)){
		var r = window.confirm("Are you sure you want to post this?");
		if( !r )
			event.preventDefault();
	}
}

setInterval(function() {
	//from the home page
	element = document.querySelectorAll('button[value="1"][type="submit"]')[0]
	parent = element.parentNode
	element.addEventListener('click', clickedPost)

	//from profile page
	element2 = document.querySelectorAll('button[value="1"][type="submit"]')[2]
	parent2 = element2.parentNode
	element2.addEventListener('click', clickedPost)

}, 500);

var isOffensive = function(comment){

	var bad = new Array();
	bad[0] = /\w*fuck\w*/
	bad[1] = /\w*fck\w*/
	bad[2] = /\w*fuk\w*/
	bad[3] = /\w*shit\w*/
	bad[4] = /\w*penis\w*/
	bad[5] = /\w*fag\w*/
	bad[6] = /\w*ass\w*/
	bad[7] = /\w*nigger\w*/
	bad[8] = /\w*dick\w*/
	bad[9] = /\w*cunt\w*/
	bad[10] = /\w*kill\s*yourself\w*/
	bad[11] = /\w*slut\w*/
	bad[12] = /\w*whore\w*/


	for (var i = bad.length - 1; i >= 0; i--) {
		if (bad[i].test(comment))
			return true;
	};
	return false;
}