arguments-call-apply.js 1.95 KB
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// Copyright 2008 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
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//
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

function sum(a, b, c) {
  var result = 0;
  for (var i = 0; i < arguments.length; i++) {
    result += arguments[i];
  }
  return result;
}

// Try invoking call before sum has been compiled lazily.
assertEquals(6, sum.call(this, 1, 2, 3), "lazy call");

assertEquals(6, sum(1, 2, 3), "normal");
assertEquals(6, sum.call(this, 1, 2, 3), "call");
assertEquals(6, sum.apply(this, [1, 2, 3]), "apply");