Tutorial by Topics: evaluating

In JavaScript, the eval function evaluates a string as if it were JavaScript code. The return value is the result of the evaluated string, e.g. eval('2 + 2') returns 4.

eval is available in the global scope. The lexical scope of the evaluation is the local scope unless invoked indirectly (e.g. var geval = eval; geval(s);).

The use of eval is strongly discouraged. See the Remarks section for details.

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