Test name | Executions per second |
---|---|
typeof string is undefined | 1018168512.0 Ops/sec |
typeof undefined is undefined | 7735384.0 Ops/sec |
string is undefined | 8005649.0 Ops/sec |
undefined is undefined | 3931658.8 Ops/sec |
typeof "not undefined" === "undefined"
typeof undefined === "undefined"
"not undefined" === undefined
undefined === undefined