Clever operations on regular expressions in JS and clever operations on JS

Clever operations on regular expressions in JS and clever operations on JS

If you don't talk much about it, paste the Code directly. The specific code is as follows:

Var msg = "dsada [emoji: 37] dsadas [emoji: 3900] farfarafen River"; function fetch (msg) {var match, result = msg, reg =/\ [emoji: \ d + \]/g, emojiIndex, totalEmojiNum = 45; while (match = reg.exe c (msg) {console. log (match [0]); // [emoji: 37], [emoji: 3900] emojiIndex = match [0]. slice (7,-1); console. log (emojiIndex); // 37,3900 if (emojiIndex> totalEmojiNum) {result = result. replace (match [0], '[X]');} else {result = result. replace (match [0], ' ') ;}; return result; // "dsada  dsadas [X] farafen River"} fetch (msg );

Summary

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