2.8 KiB
id | title | challengeType | videoUrl | forumTopicId | dashedName |
---|---|---|---|---|---|
56533eb9ac21ba0edf2244b6 | Escape Sequences in Strings | 1 | https://scrimba.com/c/cvmqRh6 | 17567 | escape-sequences-in-strings |
--description--
Quotes are not the only characters that can be escaped inside a string. There are two reasons to use escaping characters:
- To allow you to use characters you may not otherwise be able to type out, such as a carriage return.
- To allow you to represent multiple quotes in a string without JavaScript misinterpreting what you mean.
We learned this in the previous challenge.
Code | Output |
---|---|
\' | single quote |
\" | double quote |
\\ | backslash |
\n | newline |
\r | carriage return |
\t | tab |
\b | word boundary |
\f | form feed |
Note that the backslash itself must be escaped in order to display as a backslash.
--instructions--
Assign the following three lines of text into the single variable myStr
using escape sequences.
FirstLine
\SecondLine
ThirdLine
You will need to use escape sequences to insert special characters correctly. You will also need to follow the spacing as it looks above, with no spaces between escape sequences or words.
Note: The indentation for SecondLine
is achieved with the tab escape character, not spaces.
--hints--
myStr
should not contain any spaces
assert(!/ /.test(myStr));
myStr
should contain the strings FirstLine
, SecondLine
and ThirdLine
(remember case sensitivity)
assert(
/FirstLine/.test(myStr) && /SecondLine/.test(myStr) && /ThirdLine/.test(myStr)
);
FirstLine
should be followed by the newline character \n
assert(/FirstLine\n/.test(myStr));
myStr
should contain a tab character \t
which follows a newline character
assert(/\n\t/.test(myStr));
SecondLine
should be preceded by the backslash character \
assert(/\\SecondLine/.test(myStr));
There should be a newline character between SecondLine
and ThirdLine
assert(/SecondLine\nThirdLine/.test(myStr));
myStr
should only contain characters shown in the instructions
assert(myStr === 'FirstLine\n\t\\SecondLine\nThirdLine');
--seed--
--after-user-code--
(function(){
if (myStr !== undefined){
console.log('myStr:\n' + myStr);}})();
--seed-contents--
const myStr = ""; // Change this line
--solutions--
const myStr = "FirstLine\n\t\\SecondLine\nThirdLine";