javascript 十六进制的字符表示
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Character representation from hexadecimal
提问by The Mask
Is it possible to convert a hexadecimal value to its respective ASCII character, not using the String.fromCharCodemethod, in JavaScript?
是否可以String.fromCharCode在 JavaScript 中不使用该方法将十六进制值转换为其各自的 ASCII 字符？
For example:
例如：
JavaScript:
JavaScript：
0x61 // 97
String.fromCharCode(0x61) // a
C-like:
C类：
(char)0x61 // a
回答by rid
You can use the \xNNnotation:
您可以使用\xNN符号：
var str = "\x61";
回答by pimvdb
Not in that fashion, because JavaScript is loosely typed, and does not allow one to define a variable's data type.
不是那种方式，因为 JavaScript 是松散类型的，并且不允许定义变量的数据类型。
What you can do, though, is creating a shortcut:
但是，您可以做的是创建一个快捷方式：
var char = String.fromCharCode; // copy the function into another variable
Then you can call charinstead of String.fromCharCode:
然后你可以调用char而不是String.fromCharCode：
char(0x61); // a
Which is quite close to what you want (and perhaps more readable/requiring less typing).
这与您想要的非常接近（并且可能更具可读性/需要更少的输入）。
回答by david
There is also the Unicode equivalent of \x:
还有 Unicode 等价物\x：
var char = "\u0061";
