Calculating e (mathematical constant) with javascript

e-value.js

var eValue = 0;
for(var i=0; i< Infinity; i++){
    if(i==18) break;
    var fact = 1;
    for(var j=1; j<= i; j++){
        fact = fact * j;
    }
    eValue += (1/fact);
}
console.log(eValue);