Mark Spencer Mark Spencer - 1 year ago 110
Javascript Question

Function documentation and syntax - ECMA262

Help me where I can find documentation for the

function and what does the
(percentage sign) mean when placed before
(which also can't find any docs about it)

Answer Source

TO_NUMBER is a V8-internal macro defined here:

Not that this will help you much: it simply calls into an intrinsic, which is implemented as generated code, and has many different implementations depending on compiler (V8 has four), hardware platform (V8 supports about 10), and available type information. One generic code generator can be seen here:

If you just want to know the semantics, you better look at the ECMAScript 262 standard.

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