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39 lines
941 B
39 lines
941 B
/** |
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* Copyright 2013-2015, Facebook, Inc. |
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* All rights reserved. |
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* |
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* This source code is licensed under the BSD-style license found in the |
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* LICENSE file in the root directory of this source tree. An additional grant |
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* of patent rights can be found in the PATENTS file in the same directory. |
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* |
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* @providesModule joinClasses |
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* @typechecks static-only |
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*/ |
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'use strict'; |
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/** |
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* Combines multiple className strings into one. |
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* http://jsperf.com/joinclasses-args-vs-array |
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* |
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* @param {...?string} classes |
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* @return {string} |
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*/ |
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function joinClasses(className/*, ... */) { |
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if (!className) { |
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className = ''; |
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} |
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var nextClass; |
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var argLength = arguments.length; |
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if (argLength > 1) { |
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for (var ii = 1; ii < argLength; ii++) { |
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nextClass = arguments[ii]; |
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if (nextClass) { |
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className = (className ? className + ' ' : '') + nextClass; |
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} |
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} |
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} |
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return className; |
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} |
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module.exports = joinClasses;
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