I have listed some typical limits for strings in another answer. “The String type is the set of all ordered sequences of zero or more 16-bit unsigned integer values (“elements”) up to a maximum length of 2^53-1 elements” But I doubt we can do the same for IE / Opera.ĮCMA section 6.1.4 is explicit about this. These limits catch the problem (we would throw an Out-Of-Memory exception instead ifĪs far as the other browsers go, this would need some research e.g. Length is ~2^28 (512MB space), and the maximal string length is 2^29-1, so neither of
Possible allocation request in 32-bit versions of 2^27-1. So this is definitally left to the implementation.įor example, Chrome’s limit on strings seems to be hard coded at around 512mb (and less on 32bit). How much memory can I allocate in a single script?Īs you already stated, the specification does not state any size limits / requirements for types besides Number.
What can I expect for use in browsers? Is there any code-base out there that helps manage very large objects and strings? The Number type has exactly 18437736874454810627 (that is, 2^64−2^53+3) values, representing the double-precision 64-bit format IEEE 754 values as specified in the IEEE Standard for Binary Floating-Point Arithmetic, except that the 9007199254740990 (that is, 2^53−2) distinct “Not-a-Number” values of the IEEE Standard are represented in ECMAScript as a single special NaN value.īut then I don’t see anything about objects. …so perhaps this is something that needs to be identified as implemented in browsers?ĮCMA does however tell us about numbers, for example, The empty String has length zero and therefore contains no elements. The length of a String is the number of elements (i.e., 16-bit values) within it. I’m looking for information about maximum storage size for the other types also (array, object, functions, strings, numbers, bools…)
I’ve been doing it the painful way because I couldn’t find any specs on this, but constant browser crashes make this a painful trial (try catch seems useless for some reason with this particular issue). For instance, I set up a quick recursive algo to increase var size till the browser crashes, which ends up being somewhere close to 128mb (or maybe it’s 256) for strings on my existing version of chrome. Looking into javascript types I’m trying to find out what the maximum storage size for some data types are.