为什么在字符串中任意放置null终止符会终止它呢？ [英] Why doesn't the null-terminator placed arbitrarily in a string terminate it?

问题描述

空字符或空终止符（ \0 ）用于终止连续的字符序列。我发现在C中，我可以将字符添加到随机位置的字符串中，字符串将从该点切断。例如：

The null character or null-terminator (\0) is to be used to terminate a contiguous sequence of characters. I find that in C, I can add the character into a string at a random position and the string will be cut off from that point. For example:

char * s = "Hello\0World";

将导致 s 等于string Hello。但是，在JavaScript中，情况并非如此：

will result in s being equal to the string "Hello". In JavaScript, however, this is not the case:

var s = "Hello\0World";

以上内容无法按预期工作。 s 将等于字符串HelloWorld。

The above won't work as expected. s will be equal to the string "HelloWorld".

为什么这不起作用？

推荐答案

JavaScript不使用NULL终止字符串，而C表示。

JavaScript does not use NULL terminated strings, while C does.

通过分别跟踪字符和长度来存储Javascript字符串，而不是试图假设NULL标记字符串的结尾。

Javascript strings are stored by keeping track of the characters and the length separately instead of trying to assume that a NULL marks the end of the string.

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