10 out of 10000

filter.js

(function(){
    var a = [];
    
    for(var i = 0 ; i < 10000 ; i++){
        a.push({
            entryType : Math.random() < 0.001 ? 'resource' : 'mark',
            name: 'yo',
            startTime : performance.now(),
            duration: 0
        })
    
    }

    console.time('10000')

    var res = a.filter(function(e){ return e.entryType === 'resource' });

    console.timeEnd('10000')
    
    console.log('res.length', res.length)

})()