parseint

An ES-spec-compliant `parseInt` shim/polyfill/replacement that works as far down as ES3

number.isfinite

An ES-spec-compliant Number.isFinite shim/polyfill/replacement that works as far down as ES3

number.isinteger

An ES-spec-compliant Number.isInteger shim/polyfill/replacement that works as far down as ES3

number.parseint

An ES-spec-compliant Number.parseInt shim/polyfill/replacement that works as far down as ES3