正文
js 二进制转换为16进制数
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<!DOCTYPE html>
<html>
<head>
<title>远程监控</title>
</head>
<body>
<script>
function bin_to_hex(str) {
let hex_array = [{key:0,val:"0000"},{key:1,val:"0001"},{key:2,val:"0010"},{key:3,val:"0011"},{key:4,val:"0100"},{key:5,val:"0101"},{key:6,val:"0110"},{key:7,val:"0111"},
{key:8,val:"1000"},{key:9,val:"1001"},{key:'a',val:"1010"},{key:'b',val:"1011"},{key:'c',val:"1100"},{key:'d',val:"1101"},{key:'e',val:"1110"},{key:'f',val:"1111"}]
let value = ''
let list=[]
console.log(str)
if(str.length%4!==0){
let a = "0000"
let b=a.substring(0,4-str.length%4)
str = b.concat(str)
}
console.log(str)
while (str.length > 4) {
list.push(str.substring(0, 4))
str = str.substring(4);
}
list.push(str)
console.log(list)
for(let i=0;i<list.length;i++){
for(let j=0;j<hex_array.length;j++){
if(list[i]==hex_array[j].val){
value = value.concat(hex_array[j].key)
break
}
}
}
console.log(value)
return value
}
bin_to_hex("11111111");
</script>
</body>
</html>
