#     
## Overview 

The **`isInteger` method** can check if a value is an integer value or not. 

## Syntax 
The syntax of the `isInteger()` method is given below.

```javascript
_.isInteger(value)
```
## Parameter
This method takes the value to be tested for an integer.

## Return value

- This method returns `true` if the provided value is an integer. Otherwise, `false` will be returned. 

- For floating-point numbers that can be represented as integers, `true` will be returned. For the value `5.0`, we get `true` as a result.

- For the argument which is not a type of number, `false` is returned. For the String value  `'5'`, we get `false` as a result.

> Please note: `false` will be returned for `NaN` and `Infinity`.

## Code example

The code demonstrates how to use the `isInteger` method in Lodash:

<html>
 <head>
 </head>
 <body>
  
  <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>
  <script>

    // check if 1 is an integer
    console.log("_.isInteger(1) :" + _.isInteger(1));

    // check if 10.0 is an integer
    console.log("_.isInteger(10.0) :" + _.isInteger(10.0));

    // check if 10.01 an integer
    console.log("_.isInteger(10.01) :" + _.isInteger(10.01));

    // check if String value 1 is an integer
    console.log("_.isInteger('1') :" + _.isInteger('1'));
    
    // check if NaN is an integer
    console.log("_.isInteger(NaN) :" + _.isInteger(NaN));
  </script>
 </body>
</html>

codemirror

console

## Code explanation 

In the above code: 

* **Line 6:** We loaded the `Lodash` library file from the server link. 

* **Line 10:** We used the `isInteger` method to check if the numeric value `1` is an integer. We get `true` as a result. 

* **Line 13:** We used the `isInteger` method to check if the float value `10.0` is an integer. The value `10.0` can be represented as an integer, so `true` is returned as a result. 

* **Line 16:** We used the `isInteger` method to check if the float value `10.1` is an integer. The value `10.1` cannot be represented as an integer, so `false` is returned as a result. 

* **Line 19:** We used the `isInteger` method to check if the string value `'1'` is an integer. The value `'1'` is a string and not a numeric type, so `false` is returned. 

* **Line 22:** We used the `isInteger` method to check if the value `NaN` is an integer. The `isInteger` method will return `false` for `NaN`.

What is the isInteger() method in Lodash? 

Checks if a value is an integer, returns true for integers, and false for non-integers, NaN, and Infinity.