1 /*

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     3  *

     4  * Redistribution and use in source and binary forms, with or without

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    11  *   - Redistributions in binary form must reproduce the above copyright

    12  *     notice, this list of conditions and the following disclaimer in the

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    15  *   - Neither the name of Oracle nor the names of its

    16  *     contributors may be used to endorse or promote products derived

    17  *     from this software without specific prior written permission.

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    30  */

    31 

    32 // how to pass arbitrary "this" object for eval'ed script?

    33 

    34 var obj = { foo: 44 };

    35 

    36 // the following won't work. eval.apply is indirect eval call

    37 // and so 'this' will be global object always! So, this

    38 // line will print 'undefined'

    39 eval.apply(obj, [ " print(this.foo)" ]);

    40 

    41 obj.myEval = eval;

    42 

    43 // still won't work - still indirect 'eval' call!

    44 // still undefined is printed!

    45 obj.myEval("print(this.foo)");

    46 

    47 function func(code) {

    48     eval(code);

    49 }

    50 

    51 // eval called inside func and so get's func's "this" as it's "this"!

    52 // So, 44 is printed

    53 

    54 func.apply(obj, [ "print(this.foo)" ]);