How to add single quote in the variable in Javascript?

Question

I have variable var str as following:

var str = <option value="1">tea</option>;

I would like to make it as below

var quote_str = '<option value="1">tea</option>;'

Is there anyone can help me? Thanks in advance!

Edit:

I have tried the following code,however, it's not correct.

var quote_str =  'str';

Answer 1

I think that you want the semicolon outside the string literal:

var quote_str = '<option value="1">tea</option>';

If you mean that you want apostrophe characters inside the string also, you can use \' to put an apostrophe in a string delimited by apostrophes:

var quote_str = '\'<option value="1">tea</option>\'';

You can also use quotation marks to delimit the string. Then you don't have to escape the apostrophes, but you have to escape the quotation marks:

var quote_str = "'<option value=\"1\">tea</option>'";

If you already have a string, and want to add apostrophes around it, you concatenate strings:

var quote_str =  "'" + str + "'";

Answer 2

Escape each single quote with a back-slash:

var quote_str = '\'<option value="1">tea</option>;\''

…or wrap the string in quotes of a different kind (i.e. double quotes), but be sure to escape the inner double quotes as to not unintentionally close the string:

var quote_str = "'<option value=\"1\">tea</option>;'"