String.prototype.replaceAll()

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String.prototype.replaceAll()

2023-02-11 05:03| 来源: 网络整理| 查看: 265

你可以指定一个函数作为第二个参数，在这种情况下，函数只有在匹配发生之后才会被调用。The function's result (return value) will be used as the replacement string. (Note: The above-mentioned special replacement patterns do not apply in this case.)

Note that the function will be invoked multiple times for each full match to be replaced if the regular expression in the first parameter is global.

The arguments to the function are as follows:

Possible name Supplied value match The matched substring. (Corresponds to $& above.) p1, p2, ... The nth string found by a parenthesized capture group, provided the first argument to replace() was a RegExp object. (Corresponds to $1, $2, etc. above.) For example, if /(\a+)(\b+)/, was given, p1 is the match for \a+, and p2 for \b+. offset The offset of the matched substring within the whole string being examined. (For example, if the whole string was 'abcd', and the matched substring was 'bc', then this argument will be 1.) string The whole string being examined.

(The exact number of arguments depends on whether the first argument is a RegExp object—and, if so, how many parenthesized submatches it specifies.)

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String.prototype.replaceAll()

String.prototype.replaceAll()

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