How to convert string with comma to numbers?

Question

I have some coordinates in a custom field:

45.4924038,9.2040718

And I am loading them into a map like this:

var mylatLg = "<?php echo get_post_meta($id, 'usp-custom-90', true); ?>";
var mylatLg = mylatLg.split(',');

console.log(mylatLg[0]);
console.log(mylatLg[1]);

var lat = parseInt(mylatLg[0]);
var lng = parseInt(mylatLg[1]);

The first console.log gives:

45.4924001
9.206260499999985

The second control.log says:

45
9

If I load the markers as per the following below, it gives me a wrong position (as it is 45,9)

  var marker = new google.maps.Marker({
      map: map,
      position: {lat: parseInt(mylatLg[0]), lng: parseInt(mylatLg[1])},

If I load the markers as per the following below

 var marker = new google.maps.Marker({
      map: map,
      position: {lat: mylatLg[0], lng: mylatLg[1]},

It gives

InvalidValueError: setPosition: not a LatLng or LatLngLiteral: in property lat: not a number

How can I run 45.4924038,9.2040718 as I have in the custom field?

@LloydFrancis I don't want to conver it to an integer, I want to keep the correct coords, maybe stringify? — rob.m, Nov 22 '18 at 14:08
So instead of parsing your values as a number, it parses them as floats. That means you can use decimal points. Just asking, do you have to parse them at all? Won't using it without parsing work? ( I am not familiar with the Maps JS API, just a question) — lloydaf, Nov 22 '18 at 14:08
`parseFloat()` is same as `parseInt()`, only for floats. Float is a type of data that supports decimal points. — fingeron, Nov 22 '18 at 14:09
You can use `let [lat, lng] = '45.4924038,9.2040718'.split(',').map(parseFloat);` — Hassan Imam, Nov 22 '18 at 14:12

Jai · Answer 1 · 2018-11-22T14:17:09.127

4

Instead try with + unary operator which somewhat works like parseFloat():

var lat = +mylatLg[0];
var lng = +mylatLg[1];

console.log(+"45.4924001");
console.log(+"9.206260499999985");

edited Nov 22 '18 at 14:17

answered Nov 22 '18 at 14:08

Jai

74,255
12
74
103

perfect, it works. What does it do tho? I didn't know – rob.m Nov 22 '18 at 14:09
1

FYI [parseint-vs-unary-plus](https://stackoverflow.com/questions/17106681/parseint-vs-unary-plus-when-to-use-which) will help you on understanding. – Jai Nov 22 '18 at 14:13

Pehota · Accepted Answer · 2018-11-22T14:11:38.863

3

You need to use parseFloat and not parseInt. This will parse the strings to floats. Or just try to cast it using Number, e.g. Number('9.206260499999985') will produce the float 9.206260499999985.

edited Nov 22 '18 at 14:11

answered Nov 22 '18 at 14:10

Pehota

116
5

That seems good to me. also about to post the same `Number()` one. – Jai Nov 22 '18 at 14:14

How to convert string with comma to numbers?

2 Answers2