tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

rest-with-arguments.js (812B)

      1 // 'arguments' is allowed with rest parameters.
      2 
      3 var args;
      4 
      5 function restWithArgs(a, b, ...rest) {
      6    return arguments;
      7 }
      8 
      9 args = restWithArgs(1, 3, 6, 9);
     10 assertEq(args.length, 4);
     11 assertEq(JSON.stringify(args), '{"0":1,"1":3,"2":6,"3":9}');
     12 
     13 args = restWithArgs();
     14 assertEq(args.length, 0);
     15 
     16 args = restWithArgs(4, 5);
     17 assertEq(args.length, 2);
     18 assertEq(JSON.stringify(args), '{"0":4,"1":5}');
     19 
     20 function restWithArgsEval(a, b, ...rest) {
     21    return eval("arguments");
     22 }
     23 
     24 args = restWithArgsEval(1, 3, 6, 9);
     25 assertEq(args.length, 4);
     26 assertEq(JSON.stringify(args), '{"0":1,"1":3,"2":6,"3":9}');
     27 
     28 function g(...rest) {
     29    h();
     30 }
     31 function h() {
     32    g.arguments;
     33 }
     34 g();
     35 
     36 // eval() is evil, but you can still use it with rest parameters!
     37 function still_use_eval(...rest) {
     38    eval("x = 4");
     39 }
     40 still_use_eval();