How to convert a string to decimal _ JavaScript by using javascript in hexadecimal conversion

Javascript is a magic language that converts any hexadecimal string to decimal, such as binary, octal, and hexadecimal, if the second digit is not written, it is the most commonly used convert to integer decimal. JS is a magic language. Many internal functions can help us convert the number (in) format;

Javascript can be directly in hexadecimal notation;
Var a = 0xff; // 255.

Convert any hexadecimal string to decimal, such as binary, octal, and hexadecimal. If the second digit is not written, it is the most commonly used integer decimal;

The Code is as follows:

ParseInt ("11", 2); // 3 2 hexadecimal to 10 hexadecimal
ParseInt ("77", 8); // 63 convert the hexadecimal value to the hexadecimal value
ParseInt ("af", 16); // 175 hexadecimal to 10 hexadecimal

Converts a 10-hexadecimal string to a binary, octal, or hexadecimal string.
Object. toString (n): (n) represents the hexadecimal format, as shown in figure

The Code is as follows:

(152). toString (2) // "10011000"; Use brackets to convert "package" to an object, or write the following statement;
152 .. toString (2) // here the first point is to convert 152 to float decimal places, and the second point is the method of extracting objects;
152 .. toString (16) // "98": Convert decimal to hexadecimal
152 .. toString (32) // "4o": 10 hexadecimal to 32 hexadecimal

Similarly, Javascript supports a maximum hexadecimal value of 36 (26 letters + 10 digits)

35 .. toString (36) // "z": supports the maximum encoding "Z", case insensitive

If you need to complete the conversion process. You can use the following method:

The Code is as follows:

/**
* @ Param num the 16 to be filled is a number
* @ Param len the number of digits to be filled. Here is
* @ Returns string after completion
**/
Function format (num, len ){
Var l = num. length;
If (num. length <len ){
For (var I = 0; I <len-l; I ++ ){
Num = "0" + num;
}
}
Return num;
}