Source code

Revision control

Copy as Markdown

Other Tools

// Copyright (C) 2020 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-new-operator
description: >
The constructExpr is referenced before arguments in the same EvaluateNew evaluation.
Function wrap-up to use the same function level binding ref.
info: |
NewExpression : new NewExpression
1. Return ? EvaluateNew(NewExpression, empty).
MemberExpression : new MemberExpression Arguments
1. Return ? EvaluateNew(MemberExpression, Arguments).
Runtime Semantics: EvaluateNew
3. Let ref be the result of evaluating constructExpr.
4. Let constructor be ? GetValue(ref).
5. If arguments is empty, let argList be a new empty List.
6. Else,
a. Let argList be ? ArgumentListEvaluation of arguments.
7. If IsConstructor(constructor) is false, throw a TypeError exception.
8. Return ? Construct(constructor, argList).
---*/
function fn() {
var x = function() {
this.foo = 42;
};
var result = new x(x = 1);
assert.sameValue(x, 1);
assert.sameValue(result.foo, 42);
}
fn();
reportCompare(0, 0);