# Remove everything except substrings in string

**URL:** <https://forum.kirupa.com/t/remove-everything-except-substrings-in-string/332501>\
**Category:** flash\
**Created:** [July 4, 2014, 11:50am UTC](https://forum.kirupa.com/t/remove-everything-except-substrings-in-string/332501 "2014-07-04T11:50:11Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Food1234](https://avatars.discourse-cdn.com/v4/letter/f/e19adc/32.png) [@Food1234](https://forum.kirupa.com/u/Food1234)\
**Post date:** [July 4, 2014, 11:50am UTC](https://forum.kirupa.com/t/remove-everything-except-substrings-in-string/332501/1 "2014-07-04T11:50:11Z")

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Hi,

I’d like to be able to remove everything in a String EXCEPT predefined substrings, so something like;

```auto
var substring1 = "<bullet>"
var substring2 = "<img>"

var myString = "<bullet><img>some text<bullet><img>some more text <img>"

```

Some function which would return myString as “\<bullet\>\<img\>\<bullet\>\<img\>\<img\>”

Have tried split and join to remove or replace substring, but not to keep them but remove all other characters.