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52 lines
639 B
52 lines
639 B
12 years ago
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/*
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* ToBoolean() (E5 Section 9.2).
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*/
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function test(values) {
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for (var i = 0; i < values.length; i++) {
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/* Two logical NOTs is basically ToBoolean() */
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print(!!values[i]);
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}
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}
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/*===
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false
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false
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true
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false
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===*/
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test([ undefined, null, true, false ]);
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/*===
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false
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false
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false
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true
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true
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true
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true
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===*/
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test([ +0, -0, Number.NaN ]);
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test([ 123.0, -123.0, Number.POSITIVE_INFINITY, Number.NEGATIVE_INFINITY ]);
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/*===
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false
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true
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true
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===*/
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test([ "", "nonempty", "0" ]);
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/*===
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true
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true
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true
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true
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true
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===*/
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test([ {}, [], function() {}, Number.prototype.toString, Number.prototype.toString.bind('foo') ])
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