Using jquery, underscore or pure javascript what is the best way to remove the first char of a given string?

I will make something like this:

"aamerica".substring(1,"aamerica".length);

"aamerica".slice(1);

Is better to use slice or substring?

Using jquery, underscore or pure javascript what is the best way to remove the first char of a given string?

I will make something like this:

"aamerica".substring(1,"aamerica".length);

"aamerica".slice(1);

Is better to use slice or substring?

• javascript
• jquery
• underscore.js

• 1 Um... that is the best way. What is wrong with that approach? Could be wrapped in a function if you do it a lot. – Jeremy J Starcher Commented Oct 12, 2012 at 20:18

4 Answers 4

You would actually be fine doing:

"aamerica".substring(1);

EXAMPLE

substring's second parameter is optional:

string.substring(indexA[, indexB])

"aamerica".substring(1);

your "aamerica".length; is unecessary

quote from doc:

string.substring(indexA[, indexB])

If indexB is omitted, substring extracts characters to the end of the string.

You are in total 3 options:

• "aamerica".substring(1);
• "aamerica".slice(1);
• "aamerica".substr(1);

All three methods have equivalent performance.

You can use slice: "aamerica".slice(1);

You can't do it much better than you already are.

You can, however, omit the 2nd parameter when you want your substring to go to the end of the string.

var s = "aamerica".substring(1);