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1 // Copyright 2009 the Sputnik authors. All rights reserved. |
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2 // This code is governed by the BSD license found in the LICENSE file. |
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3 |
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4 /** |
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5 * The Identifier in a FunctionExpression can be referenced from inside the FunctionExpression's FunctionBody to allow the function calling itself recursively |
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6 * |
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7 * @path ch13/13.0/S13_A3_T1.js |
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8 * @description Creating a recursive function that calculates factorial, as a variable. |
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9 * Function call itself by it`s name |
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10 */ |
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11 |
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12 var __func = function __exp__func(arg){ |
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13 if (arg === 1) { |
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14 return arg; |
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15 } else { |
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16 return __exp__func(arg-1)*arg; |
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17 } |
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18 }; |
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19 |
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20 var fact_of_3 = __func(3); |
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21 |
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22 ////////////////////////////////////////////////////////////////////////////// |
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23 //CHECK#1 |
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24 if (fact_of_3 !== 6) { |
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25 $ERROR("#1: fact_of_3 === 6. Actual: fact_of_3 ==="+fact_of_3); |
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26 } |
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27 // |
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28 ////////////////////////////////////////////////////////////////////////////// |
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29 |