Run results for: searching_new

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.85 Safari/537.36

Browser: Chrome 90

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
if-else	25735.6 Ops/sec
switch	27176.1 Ops/sec
amatch	375360.7 Ops/sec

Script Preparation code:

var item = 45;

 var data = [
      // { range: [1,2,3,4,5,6,7,8,9], value: "less than 10" },
      { range: [10, 11,12,13,14,15,16,17,18,19], value: "less than 20" },
      { range: [20, 21,22,23,24,25,26,27,28,29], value: "less than 30" },
      { range: [30, 31,32,33,34,35,36,37,38,39], value: "less than 40" },
      { range: [40, 41,42,43,44,45,46,47,48,49, 25], value: "less than 50" },
      ];

const amatch = () => {
        // Exclusions - borders - out-of-bound
        if (item < 10) return "less than 10";
        if (item >= 50) return "50 or more!";
        // within range
        // return (data.filter(record => record.range.includes(item)))[0].value 
        // Below is BETTER that above as it stops on first finding!!!!
        return (data.find(record => record.range.includes(item))).value        
      };

Tests:

if-else
if (item < 10) { console.log("less than 10"); } else if (item < 20) { console.log("less than 20"); } else if (item < 30) { console.log("less than 30"); } else if (item < 40) { console.log("less than 40"); } else if (item < 50) { console.log("less than 50"); } else { console.log("50 or more!"); }
switch
switch (item) { case (item < 10): console.log("less than 10"); break; case (item < 20): console.log("less than 20"); break; case (item < 30): console.log("less than 30"); break; case (item < 40): console.log("less than 40"); break; case (item < 50): console.log("less than 50"); break; default: console.log("50 or more!"); }
amatch
const amatch = () => { // Exclusions - borders - out-of-bound if (item < 10) return "less than 10"; if (item >= 50) return "50 or more!"; // within range // return (data.filter(record => record.range.includes(item)))[0].value // Below is BETTER that above as it stops on first finding!!!! return (data.find(record => record.range.includes(item))).value }; amatch(item);

Run results for: searching_new

compating if-else vs. switch vs. find/includes

if-else

switch

amatch