js hexadecimal conversion example

Base conversion is also a very important part that needs to be mastered. This article mainly shares with you examples of js base conversion, hoping to help everyone.

1. Convert from arbitrary base to decimal

parseInt("",16)  parseInt("",8) parseInt("",2)

2. Convert from decimal to arbitrary base

a= ,
a.toString(16) a.toString(8) a.toString(2) a.toString(32)

3. Convert numbers less than 65535 to 4-digit hexadecimal. Bits are padded with zeros.

function decToHex(num)
{       var newNum = num.toString(16);       
if(num<16){        return "000"+newNum;       }       
if(num<255){        return "00"+newNum;       }      
if(num<4095){        return "0"+newNum;       }       
if(num<65535){        return newNum;       }else
{        alert("错误");       }   
}

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