下划线_.every方法是否同步？

Question

我想使用_.every方法（不使用_.each方法因为我无法打破它_.each循环）来遍历数组并在某个条件下中断遍历。所以我想知道是_.every方法是同步还是不同步？

Answer 1

是同步

  function every(collection, callback, thisArg) {
      var result = true;
      callback = lodash.createCallback(callback, thisArg, 3);

      var index = -1,
          length = collection ? collection.length : 0;

      if (typeof length == 'number') {
        while (++index < length) {
          if (!(result = !!callback(collection[index], index, collection))) {
            break;
          }
        }
      } else {
        forOwn(collection, function(value, index, collection) {
          return (result = !!callback(value, index, collection));
        });
      }
      return result;
    }