TypedArray
对象和ArrayBuffer
以及DataView
进行操作。const getHex = i => ('00' + i.toString(16)).slice(-2);
var view = new DataView(new ArrayBuffer(4)),
result;
view.setFloat32(0, 45.839152);
result = Array
.apply(null, { length: 4 })
.map((_, i) => getHex(view.getUint8(i)))
.join('');
console.log(result);
我最终决定编写自己的函数。我在这里发布它,以便能够帮助人们:
function ToHex(d) {
var sign = "0";
if(d<0.0){
sign = "1";
d = -d;
}
var mantissa = parseFloat(d).toString(2);
var exponent = 0;
if(mantissa.substr(0,1) === "0"){
exponent = mantissa.indexOf('.') - mantissa.indexOf('1') + 127;
}
else{
exponent = mantissa.indexOf('.') - 1 + 127;
}
mantissa = mantissa.replace(".", "");
mantissa = mantissa.substr(mantissa.indexOf('1')+1);
if(mantissa.length>23){
mantissa = mantissa.substr(0,23);
}
else{
while(mantissa.length<23){
mantissa = mantissa +"0";
}
}
var exp = parseFloat(exponent).toString(2);
while(exp.length<8){
exp = "0" + exp;
}
var numberFull = sign + exp + mantissa;
return parseInt(numberFull, 2).toString(16);
}