regular expression with javascript language

Question

I am working in Jquery

Is it possible to take a fragment from String variable? such as:

var text = "azerty uiop hello qsdf ghjklm wxcvbn";

I want take "hello" with 5 symboles before and after:

uiop Hello qsdf

jQuery won't really help you with string manipulation.. But yeah, easily done with pure JS. — Fabrício Matté
– Fabrício Matté, Commented Sep 19, 2012 at 14:18
jQuery is a library primarily designed to simplify DOM manipulation. With anything else, jQuery is unlikely to help you and you have to use "plain" JS (or other libraries). — Felix Kling
– Felix Kling, Commented Sep 19, 2012 at 14:20

Jørgen · Accepted Answer · 2012-09-19 14:21:37Z

4

This should work:

var text = "azerty uiop hello qsdf ghjklm wxcvbn";
console.log((text.match(/.{0,5}hello.{0,5}/) || [''])[0]); // uiop hello qsdf

edited Sep 19, 2012 at 14:21

answered Sep 19, 2012 at 14:19

Jørgen

9,2109 gold badges51 silver badges68 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Fabrício Matté Over a year ago

+1, I'd also use {0,5} in case the match is at a position which doesn't have 5 characters before or after.

Jørgen Over a year ago

Thanks. I agree with you, although it depends on the use case if "up to five" characters is the correct solution.

mvark · Accepted Answer · 2012-09-19 14:44:04Z

1

You can also extract a fragment of a string using the substring function -

var text = "azerty uiop hello qsdf ghjklm wxcvbn";
var target = text.indexOf("hello");
print(text.substring(target-5,target+10));

answered Sep 19, 2012 at 14:44

mvark

2,1042 gold badges21 silver badges37 bronze badges

Comments

Dennis · Accepted Answer · 2012-09-19 14:20:10Z

0

Try using a regex in plain javascript:

/.{5}hello.{5}/.exec(text)

answered Sep 19, 2012 at 14:20

Dennis

14.5k3 gold badges37 silver badges56 bronze badges

Comments

Fabrizio Calderan · Accepted Answer · 2012-09-19 14:20:17Z

0

var text = "azerty uiop hello qsdf ghjklm wxcvbn";
text.match(/.{5}hello.{5}/)[0]; // uiop hello qsdf

answered Sep 19, 2012 at 14:20

Fabrizio Calderan

124k26 gold badges171 silver badges183 bronze badges

Collectives™ on Stack Overflow

regular expression with javascript language

4 Answers 4

2 Comments

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

2 Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related