How to check number is integer or float using jquery

Question

Actually we are using d3 with grails. there is scenario like we need to sort the given input according to integer, float and string.

I can check weather the input is number or string with `

if(typeof(d["colorField"])=='number'){
  L_KEY_NUMERIC = true;
}else{
   L_KEY_NUMERIC = true;
}

but this is failing for double value. double values are not getting sorted properly.

So, i need to check whether the key is double or integer using jquery. currently I'am using sort() method which sorts for integer normally but not for double values. once i detect the key is double or float which sort method i need to use.

And how to sort float key via ascending order in jquery.

Any help appreciated.

score 0 · Accepted Answer · edited Sep 07 '15 at 12:02

0

You should use d["colorField"] % 1 === 0 to check if key is number:

if(d["colorField"] % 1 === 0){
 //if number is integer 
 L_KEY_NUMERIC = true;
}else{
 //if number is float
 L_KEY_NUMERIC = true;
}

edited Sep 07 '15 at 12:02

answered Sep 04 '15 at 14:01

Milind Anantwar

81,290
25
94
125

You have given answer to check number or float numbers. – Sep 07 '15 at 06:36
if part to check number else part for not number – Milind Anantwar Sep 07 '15 at 06:38
My question was different. I know it number but after that how can I check key is integer number or float number. – Sep 07 '15 at 06:40
that is what it does. if its integer, it will go in if part for float it will go in else part. – Milind Anantwar Sep 07 '15 at 06:42
Thanks. For quick response will check now. – Sep 07 '15 at 06:43
Please can you tell me how to sort float numbers in ascending order using jquery. – Sep 07 '15 at 06:47
@PradeepSam: see http://stackoverflow.com/a/18496997/1719752 – Milind Anantwar Sep 07 '15 at 06:49
Hi Milind please can you tell me how can i check a string is date or not. d["colorField"] has values ["1/10/1978 0:00", "2/3/1988 0"] now this is not working if(isNaN(date)){ alert(isNaN(date)) stringIsDate ++; } – Sep 08 '15 at 09:15
@PradeepSam: would be great if you can post new question with problem. – Milind Anantwar Sep 08 '15 at 12:08
http://stackoverflow.com/questions/32455261/how-to-sort-a-string-which-has-date-values-using-jquery/32456171#32456171 similar to my issue. – Sep 08 '15 at 12:47

score 0 · Answer 2 · answered Sep 04 '15 at 14:03

0

Or you could use parseFloat(string)

e.g.
if (!isNan(parseFloat(string))){
  //your code here
}

answered Sep 04 '15 at 14:03

Craig Poole

740
8
19

How to check number is integer or float using jquery

2 Answers2