25 lines
749 B
JavaScript
25 lines
749 B
JavaScript
import isArray from './is-array';
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import isFunction from './is-function';
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var hasOwnProperty = Object.prototype.hasOwnProperty;
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function groupBy(data, condition) {
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if (!condition || !isArray(data)) {
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return {};
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}
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var result = {};
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// 兼容方法和 字符串的写法
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var predicate = isFunction(condition) ? condition : function (item) { return item[condition]; };
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var key;
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for (var i = 0; i < data.length; i++) {
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var item = data[i];
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key = predicate(item);
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if (hasOwnProperty.call(result, key)) {
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result[key].push(item);
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}
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else {
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result[key] = [item];
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}
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}
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return result;
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}
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export default groupBy;
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//# sourceMappingURL=group-by.js.map
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