26 lines
779 B
JavaScript
26 lines
779 B
JavaScript
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var library = [
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{ author: 'Bill Gates', title: 'The Road Ahead', libraryID: 1254},
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{ author: 'Steve Jobs', title: 'Walter Isaacson', libraryID: 4264},
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{ author: 'Suzanne Collins', title: 'Mockingjay: The Final Book of The Hunger Games', libraryID: 3245}
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];
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function property_value(array, property_key) {
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var arr = [],
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index = -1,
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arrlen = array.length,array_items;
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while (++index < arrlen) {
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array_items = array[index];
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if (array_items.hasOwnProperty(property_key))
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{
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arr[arr.length] = array_items[property_key];
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}
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}
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return arr;
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}
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console.log(property_value(library, 'title'));
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console.log(property_value(library, 'author'));
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