// 10进制转16进制补0/**
* @params dec 待转换的10进制
* @params len 转换后的16进制长度,不足的左侧补0
*/functiondec2hex(dec, len){
//10进制转16进制补0var hex ="";while( dec ){
var last = dec &15;
hex = String.fromCharCode(((last>9)?55:48)+last)+ hex;
dec >>=4;}if(len){
while(hex.length < len) hex ='0'+ hex;}return hex;}
16进制转10进制
// 10进制转16进制补0functionstring_hex2int(hex){
//16进制转10进制var len = hex.length, a =newArray(len), code;for(var i =0; i < len; i++){
code = hex.charCodeAt(i);if(48<=code && code <58){
code -=48;}else{
code =(code &0xdf)-65+10;}
a[i]= code;}return a.reduce(function(acc, c){
acc =16* acc + c;return acc;},0);}