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"[Function.length is] the number of formal parameters. This number excludes the rest parameter and only includes parameters before the first one with a default value." - MDN
27 lines
608 B
JavaScript
27 lines
608 B
JavaScript
load("test-common.js");
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try {
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function foo() { }
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assert(foo.length === 0);
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assert((foo.length = 5) === 5);
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assert(foo.length === 0);
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function bar(a, b, c) {}
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assert(bar.length === 3);
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assert((bar.length = 5) === 5);
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assert(bar.length === 3);
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function baz(a, b = 1, c) {}
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assert(baz.length === 1);
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assert((baz.length = 5) === 5);
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assert(baz.length === 1);
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function qux(a, b, ...c) {}
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assert(qux.length === 2);
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assert((qux.length = 5) === 5);
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assert(qux.length === 2);
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console.log("PASS");
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} catch (e) {
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console.log("FAIL: " + e);
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}
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