Test name | Executions per second |
---|---|
typeof string is undefined | 509141920.0 Ops/sec |
typeof undefined is undefined | 7954933.0 Ops/sec |
string is undefined | 7806346.5 Ops/sec |
undefined is undefined | 3981926.2 Ops/sec |
typeof "not undefined" === "undefined"
typeof undefined === "undefined"
"not undefined" === undefined
undefined === undefined