In JavaScript, which types support toString()? -


the good:

'hello'.tostring()    // "hello" let obj = {} obj.tostring()        // "[object object]"

the bad:

undefined.tostring()  // throws typeerror null.tostring()       // throws typeerror

are there other types throw on .tostring() method? thanks

every obj inherited object has string method.

starting javascript starting in javascript 1.8.5 tostring() called on null returns [object null], and undefined returns [objectundefined].

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