How JavaScript converts data into Integers

How JavaScript converts data into Integers

This article mainly introduces how JavaScript converts data into integers. If you need it, refer to it.

JavaScript provides the parseInt method to convert a value to an integer, which is used to convert the string data to "123" or a floating point number of 1.23.

 

The Code is as follows:

ParseInt ("1"); // 1

ParseInt ("1.2"); // 1

ParseInt ("-1.2"); //-1

ParseInt (1.2); // 1

ParseInt (0); // 0

ParseInt ("0"); // 0

 

 

However, this parseInt function is not often valid:

 

The Code is as follows:

ParseInt ('06'); // 6

ParseInt ('08'); // 0 note that the new version of Google has been fixed

ParseInt ("1g"); // 1

ParseInt ("g1"); // NaN

 

 

Therefore, I wrote a function to convert any data into integers.

 

The Code is as follows:

Function toInt (number ){

Return number * 1 | 0 | 0;

}

 

// Test

ToInt ("1"); // 1

ToInt ("1.2"); // 1

ToInt ("-1.2"); //-1

ToInt (1.2); // 1

ToInt (0); // 0

ToInt ("0"); // 0

ToInt (Number. NaN); // 0

ToInt (1/0); // 0

 

Here are some conversion functions written by netizens, which can also be used as a reference to convert data into integers.

The Code is as follows:

Function toInt (number ){

Return number & + number | 0 | 0;

}

 

Note that the valid Integer Range of the preceding two functions in Javascript is-1569325056 ~ 1569325056

 

To express a larger range of values in js, I also wrote a function for reference, as shown below:

 

 

The Code is as follows:

Function toInt (number ){

Return Infinity = number? 0: (number * 1 | 0). toFixed (0) * 1;

}