JavaScript Cookbook

formatnumber.js

function formatNumber(value) {
	value = value.toString()
		.replace(".", ",")
		.replace(" ", "")
		.replace("-", "−");
		
	var re = /(\d+)(\d{3})/;
	while (re.test(value)) {
		value = value.replace(re, "<i>$1</i>$2");
	}
			
	return value;
}

gettext.js

function getText(node) {
	return node.textContent || node.innerText;
}

plural.js

// ['минута', 'минуты', 'минут'][plural(minutes)]

function plural(n) {
	return (n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);
}

trim.js

if (!String.prototype.trim) {
    String.prototype.trim = function() {
         return this.replace(/^\s+|\s+$/g, '');
    }
}