Comparison Helper for Handlebars JS.

handlebars.ifCond.js

// @see http://bdadam.com/blog/comparison-helper-for-handlebars.html

(function() {
    function checkCondition(v1, operator, v2) {
        switch(operator) {
            case '==':
                return (v1 == v2);
            case '===':
                return (v1 === v2);
            case '!==':
                return (v1 !== v2);
            case '<':
                return (v1 < v2);
            case '<=':
                return (v1 <= v2);
            case '>':
                return (v1 > v2);
            case '>=':
                return (v1 >= v2);
            case '&&':
                return (v1 && v2);
            case '||':
                return (v1 || v2);
            default:
                return false;
        }
    }

    Handlebars.registerHelper('ifCond', function (v1, operator, v2, options) {
        return checkCondition(v1, operator, v2)
                    ? options.fn(this)
                    : options.inverse(this);
    });
}());