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30 lines
750 B
JavaScript
30 lines
750 B
JavaScript
// Array indices are stored numerically, however in many cases when iterating they need to be returned to code as strings!
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function checkArray(a) {
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console.log(Object.keys(a));
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for (var i in a) {
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if ("string"!= typeof i)
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throw new Error("FOR...IN: Got array key type "+typeof i);
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}
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Object.keys(a).forEach(i => {
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if ("string"!= typeof i)
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throw new Error("OBJECT.KEYS: Got array key type "+typeof i);
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});
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Object.getOwnPropertyNames(a).forEach(i => {
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if ("string"!= typeof i)
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throw new Error("OBJECT.KEYS: Got array key type "+typeof i);
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});
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}
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a = [1,2,3,4,5];
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checkArray(a);
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a = [];
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a[2] = 5;
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a["4"] = 6;
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a["0402"] = 7;
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a["test"] = 7;
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checkArray(a);
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result=1; // if we had an exception we won't get here
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