JavaScript .map() syntax error

Question

new to JS.

I'm using google script to create a function that will input a string will output the interger in it (if any). In order to optimize for google script, I've read suggestions on allowing also ranges as input.

I'm getting an error when using .map, but I can't figure out what it is. Any help. I've been looking for more examples of the use of map but none were helpfull.

Any idea?

thanks everyone

if (input.map) {
  input.map(
    if (isInt(split[i])) {
      result = split[i]
    });
} else {
  for (i = 0; i < split.length; i++) {
    if (isInt(split[i])) {
      result = split[i];
    }
  }
}

First parameter of map is a function what you have is an expressionMDN. — Bobby Tables
– Bobby Tables, Commented Oct 9, 2015 at 13:50
If the code doesn’t actually modify your input array, then forEach is better suited than map. — Sebastian Simon
– Sebastian Simon, Commented Oct 9, 2015 at 13:53
You cannot use statements as function arguments. Have you ever seen code that looks like foo(if(true) { ... }). That doesn't make sense. MDN usually has examples. — Felix Kling
– Felix Kling, Commented Oct 9, 2015 at 13:58

Oleksandr T. · Accepted Answer · 2015-10-09 13:50:58Z

3

To .map you should pass function as parameter,

input.map(function() {
    // your code
});

answered Oct 9, 2015 at 13:50

Oleksandr T.

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Comments

guest271314 · Accepted Answer · 2015-10-09 14:12:53Z

0

will input a string will output the interger in it (if any)

Try using isNaN , Number() , Array.prototype.filter() , typeof to return Number values

var arr = ["1", "a", "0"];
var res = arr.map(function(n) {
  return !isNaN(Number(n)) && Number(n)
}).filter(function(n) {
  return typeof n === "number"
});
console.log(res)

edited Oct 9, 2015 at 14:12

answered Oct 9, 2015 at 14:00

guest271314

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