Case sensitivity of argument?

Question

Is there a way to pass case sensitivity together with an argument?

   var user = {
  'name' : 'Jim',
  'lastName' : 'Xydas',
  'fullName' : function(){
    return this.name + " " + this.lastName
  },

  'address' : {
    'country' : "Greece",
    'town'    : "Thessaloniki",
    'street'  : "il.ap 15",

    "isFromTown" : function(n){
        return this.town == n ? true : false;
    }
  }
};

var checkUser = user.address.isFromTown("thessaloniki");

console.log(checkUser);

What I'm trying to do here is pass the argument as "thessaloniki" and print true, ignoring the first (or more) uppercase letter(s).

https://jsfiddle.net/DimitriXd4/mfpat7so/

Thanks in advance.

http://stackoverflow.com/questions/2140627/javascript-case-insensitive-string-comparison — Sergio Tulentsev, Aug 31 '16 at 11:22

Nina Scholz · Accepted Answer · 2017-11-26T16:59:40.123

3

You could use String#toLowerCase() or String#toLocaleLowerCase for both strings for comparing.

var user = {
    'name' : 'Jim',
    'lastName' : 'Xydas',
    'fullName' : function() {
        return this.name + " " + this.lastName
     },
    'adress' : {
        'country' : "Greece",
        'town'    : "Thessaloniki",
        'street'  : "il.ap 15",
        "isFromTown" : function(n){
            return this.town.toLocaleLowerCase() == n.toLocaleLowerCase();
        }
    }
};

var checkUser = user.adress.isFromTown("thessaloniki");

console.log(checkUser);

edited Nov 26 '17 at 16:59

answered Aug 31 '16 at 11:22

Nina Scholz

376,160
25
347
392

1

Thank you that works lovely and easily :). – Dimitris Xydas Aug 31 '16 at 11:28
1

if you use some spacial characters, you may have a look to `String#toLocaleLowerCase` – Nina Scholz Aug 31 '16 at 11:35
1

@DimitrisXydas - if you're using the greek alphabet, rather than straight [a-zA-Z] characters, Nina's comment is important! – Jamiec Aug 31 '16 at 11:38

score 3 · Answer 2 · answered Aug 31 '16 at 11:22

3

Sure, just pass another parameter

"isFromTown" : function(n, caseSensitive){
    return caseSensitive 
      ? this.town == n 
      : this.town.toLowerCase() == n.toLowerCase();
}

https://jsfiddle.net/mfpat7so/1/

answered Aug 31 '16 at 11:22

Jamiec

133,658
13
134
193

Kushagara.K · Answer 3 · 2016-08-31T11:27:27.457

2

Use the below snippet in the function

return (this.town.toUpperCase()) === (n.toUpperCase());

edited Aug 31 '16 at 11:27

answered Aug 31 '16 at 11:25

Kushagara.K

67
2
8

@Jamiec edited it. Thanks! – Kushagara.K Aug 31 '16 at 11:29
@Jamiec `()` reduntant also – Maxx Aug 31 '16 at 11:30

Case sensitivity of argument?

3 Answers3