A blank circle of friends is a circle of friends that looks like it has no text, because you can’t send it without input text. Invisible characters have text content, but the human eye can not see, so it is equivalent to blank.

Invisible character

Invisible characters are zero-width Spaces. See Wikipedia for an explanation zh.wikipedia.org/wiki/%E9%9B… :

Zero-width space (ZWSP) is a non-printable Unicode character used where line breaks may be required.

www.fileformat.info/info/unicod… There are a number of invisible characters listed here, which are displayed by the console input with the corresponding Unicode code.

\u0300
̀

00000000 

>>> strlen('̀') = >2
Copy the code

Blank circle of friends

Copy the above invisible characters to the moments, the effect is as follows:

Weibo.com/2717930601/…

Interesting character

www.compart.com/en/unicode/… And unicode-table.com/cn/#lao there are some interesting characters listed here.

For the e character, unicode is \u00e9, and ‘\u0301’ is an invisible character. ‘E’ + ‘\u0301’ is spelled like this. E length of 1, after mosaics of length 2, see www.cnblogs.com/52cik/p/uni…

'e'+Array(50).join('\u0301')

E ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́ ́

Continue to splice characters’ fun ‘+ Array (50). Join (‘ \ u0310’) + Array (50). Join (‘ \ u0598 ‘) + Array (50). Join (‘ \ u0e49 ‘);

It’s fun ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ̐ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ֘ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้ ้

Zero length short url

Zws. im/ This site tricks your vision with invisible characters. After entering the NetEase cloud music url, the address becomes https://zws.im//. It seems that the address is not NetEase, but it jumps to NetEase.

ml.mk/

https://ml.mk/‌‌‌‌‌‌‌‌​‌​​​‌​‌/

In addition, someone also made a zero wide character hidden encryption website, the principle is to use zero wide characters in the text does not show the special characters, the encrypted text transcoding, embedded in the ordinary text, so as to hide the encrypted content; It looks like plain text, so copy and paste won’t get lost.

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Public account: Su Sheng no doubt