Preferred way to break a forEach method in JavaScript
This question already has an answer here:
forEach is not supposed to break. If you 'd like to break a forEach -like loop, try every or some , which let you break out of the loop.
A possible way to re-write your code could be
var sum = 0;
yourArray.some(function (item) {
if (sum > 5) {
return true;
}
sum += item;
});
You can't break out of a forEach . Just use a normal loop
for(var i = 0; i < a; i++){
sum += a[i];
if(sum > 5) break;
}
Your current code seems a little silly.
Your try/catch block is useless, as you don't ever throw an error for the catch block to catch, then re-throw (?) and you don't need to alert("break"); to stop a script.
You can't break out of a forEach loop anyway, I think you'd just want to use a normal for loop:
function sum(list){
var sum = 0;
for (var i = 0, len = list.length; i < len; i++){
sum += list[i];
if (sum > 5){
break;
}
}
return sum;
}