Test name | Executions per second |
---|---|
typeof string is undefined | 1035507008.0 Ops/sec |
typeof undefined is undefined | 14968522.0 Ops/sec |
string is undefined | 15064188.0 Ops/sec |
undefined is undefined | 7624877.5 Ops/sec |
typeof "not undefined" === "undefined"
typeof undefined === "undefined"
"not undefined" === undefined
undefined === undefined