How to get a substring javascript

Question

I have a String like var foo = 'foo {{Email18}}'. But the digit part is variable or unknown.

I need to get the subString {{Email18}}.

I want to do something like foo.search(/{{Email\d{1,}}}/) which will return me {{Email18}}. How do I do that?

As a side note, the quantifier + is semantically equivalent to your quantifier {1,}. — Aaron
– Aaron, Commented May 25, 2016 at 8:47

Pranav C Balan · Accepted Answer · 2016-05-25 08:44:02Z

3

Use match() with regex /{{Email\d{1,}}}/

var foo = 'foo {{Email18}}';

console.log(
  foo.match(/{{Email\d{1,}}}/)[0]
);

answered May 25, 2016 at 8:44

Pranav C Balan

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Comments

Ciprianis · Accepted Answer · 2016-05-26 02:35:26Z

1

Or you can use a little string manipulation:

var str = "foo {{Email18}}";

function myFunction(arg) {
    return arg.toString().substr(arg.indexOf("{"), arg.lastIndexOf("}"));
}; 

var newStr = myFunction(str);

edited May 26, 2016 at 2:35

answered May 25, 2016 at 8:50

Ciprianis

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2 Comments

Aaron Over a year ago

Nice answer, but I don't see the point of using a function here if you don't pass the string as a parameter.

Ciprianis Over a year ago

@Aaron: Here you go! :)

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