src/jquery.timelineMe.js
function(items, propertyName) {
        if(!items) return false;

        var hasProperty = true;
        for(var i = 0; i < items.length; i++) {
            if(isNaN(items[i][propertyName]))
                hasProperty = false;
        }
        return hasProperty;
    }
function(items, propertyName) {
        if(!items) return false;

        var hasProperty = true;
        for(var i = 0; i < items.length; i++) {
            if(isNaN(items[i][propertyName]))
                hasProperty = false;
        }
        return hasProperty;
    }
function ( items , propertyName ) { if ( ! items ) return false ; var hasProperty = true ; for ( var i = 0 ; i < items . length ; i ++ ) { if ( isNaN ( items [ i ] [ propertyName ] ) ) hasProperty = false ; } return hasProperty ; }
Method checking if all items of an array have a specific number property
Method checking if all items of an array have a specific number property