Remove Whitespace from Start and End # 43
Sometimes whitespace characters around strings are not wanted but are there. Typical processing of …
Sometimes whitespace characters around strings are not wanted but are there. Typical processing of …
Searching is useful. However, you can make searching even more powerful when it also changes (or re…
Some patterns you search for will occur multiple times in a string. It is wasteful to manually repe…
Sometimes we want to check for groups of characters using a Regular Expression and to achieve that …
Sometimes the patterns you want to search for may have parts of them that may or may not exist. How…
You can specify the lower and upper number of patterns with quantity specifiers using curly bracket…
You can specify the lower and upper number of patterns with quantity specifiers using curly bracket…
You learned about searching for whitespace using \s, with a lowercase s. You can also search for ev…
The challenges so far have covered matching letters of the alphabet and numbers. You can also match…
The last challenge showed how to search for digits using the shortcut \d with a lowercase d. You ca…
You've learned shortcuts for common string patterns like alphanumerics. Another common pattern …
we have learned that you can use a shortcut to match alphanumerics [A-Za-z0-9_] using \w. A natural…
let str = "Larry Page is a good and famous programmer is in the world"; let regx = new Re…
Using character classes, you were able to search for all letters of the alphabet with [a-z]. This k…
In the last challenge, you learned to use the caret character to search for patterns at the beginni…
Prior challenges showed that regular expressions can be used to look for a number of matches. They …
In regular expressions, a greedy match finds the longest possible part of a string that fits the re…
The last challenge used the plus + sign to look for characters that occur one or more times. There&…
Sometimes, you need to match a character (or group of characters) that appears one or more times in…
So far, you have created a set of characters that you want to match, but you could also create a se…