Search and highlight HackerNews comments

hncommentsearch.js

// Paste this into your JS console, love.

var sNeedle = prompt("Find what?").toLowerCase();
var tds = document.getElementsByClassName("default");
var iTdCount = tds.length;

for (var i = 0; i < iTdCount; i++) {
	var td = tds[i];
	var sHtml = td.innerHTML.toLowerCase();
	if (sHtml.indexOf(sNeedle) > -1) {
		td.setAttribute(
			"style", 
			(td.getAttribute("style") || "") + "background: yellow; box-shadow: 0 0 0 10px yellow;"
		);
	}
}