underscore.js _.isEmpty(Object)
2012-04-16 22:56
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Returns true if object contains no values.
用于检测一个对象是否是空的
源码:
用于检测一个对象是否是空的
_.isEmpty([1, 2, 3]);
=> false
_.isEmpty({});
=> true源码:
_.isEmpty = function(obj) {
if (obj == null) return true;
if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
for (var key in obj) if (_.has(obj, key)) return false;
return true;
};
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