Run results for: match vs exec #2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Browser: Chrome 83

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
exec	89.8 Ops/sec
match	1467.4 Ops/sec
exec case	87.1 Ops/sec

Script Preparation code:

function findAll(regexPattern, sourceString) {
    let output = []
    let match
    // make sure the pattern has the global flag
    let regexPatternWithGlobal = RegExp(regexPattern,"gi")
    while (match = regexPatternWithGlobal.exec(sourceString)) {
        // get rid of the string copy
        delete match.input
        // store the match data
        output.push(match)
    } 
    return output
}

function findAllCase(regexPattern, sourceString) {
    let output = []
    let match
    // make sure the pattern has the global flag
    let regexPatternWithGlobal = RegExp(regexPattern,"gi")
    while (match = regexPatternWithGlobal.exec(sourceString)) {
        // get rid of the string copy
        delete match.input
        // store the match data
        output.push(match)
    } 
    return output
}

var find = 'a';
var str = 'asdqwe'.repeat(10000);

Tests:

exec
findAll(find, str);
match
str.match(RegExp(find, 'gi'));
exec case
findAllCase(find, str);

Run results for: match vs exec #2

for multiple cases, registry

exec

match

exec case