Handlebars - registerHelper 모음

/**
 * handlebarsHelper - for문 * ex)
 */
Handlebars.registerHelper('for', function(from, to, incr, block) {
    var accum = '';
    for(var i = from; i <= to; i += incr)
        accum += block.fn(i);
    return accum;
});
 
/**
 * handlebarsHelper - index ( start : 1 ) * ex) {{incremented @index}}
 */
Handlebars.registerHelper('incremented', function(index){
    return index + 1;
});
 
/**
 * handlebarsHelper - if문 * ex) * {{#ifEquals bizArea "A"}} * 소계 * {{else ifEquals bizArea "B"}} * 합계 * {{else}} * 누계 * {{/ifEquals}}
 */
Handlebars.registerHelper('ifEquals', function(arg1, arg2, options) {
    return (arg1 == arg2) ? options.fn(this) : options.inverse(this);
});
 
/**
 * handlebarsHelper - select
 */
window.Handlebars.registerHelper('select', function(value, options) {
    var $el = $('<select />').html( options.fn(this) );
    $el.find('[value="' + value + '"]').attr({'selected':'selected'});
    return $el.html();
});
 
/**
 * handlebarsHelper - numberFormat 기본 소수점 절삭
 * 사용법 참조 : http://jsfiddle.net/DennyLoko/6sR87/
 */
Handlebars.registerHelper('numberFormat', function (value, options) {
    // Helper parameters
    var dl = options.hash['decimalLength'] || 0;
    var ts = options.hash['thousandsSep'] || ',';
    var ds = options.hash['decimalSep'] || '.';
 
    // Parse to float
    var value = parseFloat(value);
    if (isNaN(value))
        return '';
 
    // The regex
    var re = '\\d(?=(\\d{3})+' + (dl > 0 ? '\\D' : '$') + ')';
 
    // Formats the number with the decimals
    var num = value.toFixed(Math.max(0, ~~dl));
 
    // Returns the formatted number
    return (ds ? num.replace('.', ds) : num).replace(new RegExp(re, 'g'), '$&' + ts);
});
 
/**
 * handlebarsHelper - defaultValue 설정 * ex) {{defaultValue bizArea '값이없음'}}
 */
Handlebars.registerHelper('defaultValue', function (value, defaultValue) {
    var out = value || defaultValue;
    return new Handlebars.SafeString(out);
});
 
/**
 * handlebarsHelper - 부등호 사용 스크립트
 */
Handlebars.registerHelper('ifCond', function (v1, operator, v2, options) {
    switch (operator) {
        case '==':
            return (v1 == v2) ? options.fn(this) : options.inverse(this);
        case '===':
            return (v1 === v2) ? options.fn(this) : options.inverse(this);
        case '!=':
            return (v1 != v2) ? options.fn(this) : options.inverse(this);
        case '!==':
            return (v1 !== v2) ? options.fn(this) : options.inverse(this);
        case '<':
            return (v1 < v2) ? options.fn(this) : options.inverse(this);
        case '<=':
            return (v1 <= v2) ? options.fn(this) : options.inverse(this);
        case '>':
            return (v1 > v2) ? options.fn(this) : options.inverse(this);
        case '>=':
            return (v1 >= v2) ? options.fn(this) : options.inverse(this);
        case '&&':
            return (v1 && v2) ? options.fn(this) : options.inverse(this);
        case '||':
            return (v1 || v2) ? options.fn(this) : options.inverse(this);
        default:
            return options.inverse(this);
    }
});