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One can define a string of JavaScript as a function object:
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target = new Function( [arg1,...,argn,] functionBody )
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where the arguments arg1,...,argn are optional
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target is either a variable, a property of an existing object, or an event handler such as window.onerror
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var setBGcolor =
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new Function("document.bgColor='antiquewhite'");
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You can now execute setBGcolor() but note that the function can be changed at any time. For example,
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setBGcolor = new Function("document.bgColor='pink'");
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One can define event handlers dynamically, but they MUST be lowercase and they MUST have no arguments:
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window.onfocus = setBGcolor;
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Like eval, the function body may be constructed dynamically:
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var myProp = 'bgcolor';
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Function("document." + myProp + "='antiquewhite'");
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