How to cut off string in preactjs

Question

I'm trying to cut off string in PreactJS as follow,

mystring.subString(0, 10)

unfortunately, error found that 'subString' undefined or something else seem it does not work. Please let me know how to do it?

`subString` -> `substring`. – James Donnelly Nov 07 '17 at 08:12 — James Donnelly, Nov 07 '17 at 08:12
`TypeError: Cannot read property 'substring' of undefined` – PPShein Nov 07 '17 at 08:59 — PPShein, Nov 07 '17 at 08:59

score 0 · Accepted Answer · answered Nov 07 '17 at 08:11

0

This has nothing to do with Preact, it's a syntax error

It should be : 'mystring'.substring(0, 10)

answered Nov 07 '17 at 08:11

Daniel Andrei

@ppshein Can you show more code? It seems that your `mystring` variable is undefined. – Daniel Andrei Nov 07 '17 at 09:00
my bad, I forgot to check undefine for `mystring` – PPShein Nov 07 '17 at 09:03

score 0 · Answer 2 · answered Jan 15 '19 at 09:38

0

@daniel is correct. And the following is also possible :-

'mystring'.substr(0, 10)

answered Jan 15 '19 at 09:38

Srk95

1

Using substr is _possible_ but **strongly discouraged**. See the [doc of the function on the MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/substr) or [a related question on SO](https://stackoverflow.com/questions/52640271/why-string-prototype-substr-seems-to-be-deprecated). – Lex Lustor Jan 15 '19 at 10:05

2 Answers2