Reg Exp

[Chikwado]

Some one help view this: I was hoping that this script would work, It some how behave as it work. code This is what want to do with that script: In textarea I will type my bla bla phrase then in the text field i will type regexp pattern and the script will pass the match to new div. Ok, for example if i type "hello world" in the textarea i will type this

/world/i;

to match world. Then it stop working. But if i remove this character

//i;

it start to return the match Edited January 17, 2016 by Chikwado

[justsomeguy]

The text is just a string, not a regular expression pattern. If you type "/world/i;", then it is looking for "/world/i;", not "world" with the i modifier. You can try to parse the text to get the delimiters, pattern, and flags and then create a RegExp object and pass that to match.

 

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp

[ShadowMage]

I was going to say you could use eval on the string to turn it into a regexp, but that probably wouldn't be a good idea to use on a user input field.

[Chikwado]

You can parse the text to get the delimeter, pattern and flags and create regular expression object

I don't know how to do that, Can you help me do it? I like to type my phrase in the textarea and input pattern in text field to match some word.

[justsomeguy]

If you're counting on "/" being the delimiter, then use something like String.split to split the text up and get the various parts. See the MDN documentation for how to create a RegExp object.