CODEWITHSUNDEEP
javascriptarrays
Alimin
Alimin

Reputation: 2727

return length string in javascript when string inside in array

I have an array as follows:

var str_array=["hello","world"]

How to get length of string when string are there in array? I just want to get length of string "hello" and then "world" inside a loop. This is what I've tried:

for (var i=0; i<= str_array[0].length; i++){
  alert(str_array[i].starAt(i)); 
 }

I get error message

TypeError: Cannot read property 'length' of undefined

Upvotes: 0

Views: 76

Answers (2)

brroshan
brroshan

Reputation: 1650

How about this:

str_array.forEach(function(e){ alert("Length = " + e.length) });

You could also use map to get the length out of each element:

var lengths = str_array.map(function(e){ return e.length });

Upvotes: 1

Rayon
Rayon

Reputation: 36609

Try this:

var str_array = ["hello", "world"];
for (var i = 0, len = str_array.length; i < len; i++) {
  alert('Length of ' + str_array[i] + ' is ' + str_array[i].length);
}

Upvotes: 2

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