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Results tagged with ecmascript
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user 30385
ECMAScript is the scripting language standardized by Ecma International in the ECMA-262 specification and ISO/IEC 16262.
49
votes
3
answers
32k
views
Any point in using ES6 Map when keys are all strings?
Plain object keys must be strings, whereas a Map can have keys of any type.
But I have little use for this in practice. In nearly all cases, I find myself using strings as keys anyway. And presumably …
- 10.4k
15
votes
3
answers
4k
views
Why can't an ES2015 WeakMap have primitive keys?
There are six primitive data types in JavaScript:
Boolean, Number, String, Symbol, undefined, null
A WeakMap can't have primitive data types as keys. And a WeakSet can't have primitive values.
Why …
- 10.4k