There is the W3C DOM 3 Core textContent property supported by some browsers, or the MS/HTML5 innerText property supported by other browsers (some support both). Likely the content of the script element is unwanted, so a recursive traverse of the related part of the DOM tree seems best:
You could use the in keyword to check for your substring: Or, if you had a string s with \n characters: Your regex only prints elephant because that’s what it captured: exactly your regex string. If you were to try the following regex instead: Then you’d have results for test.group(0) and test.group(1) which include the whole line before and after the elephants. That’s the whole captured string. … Read more
A great way to do this is to use negative lookahead: The negative lookahead construct is the pair of parentheses, with the opening parenthesis followed by a question mark and an exclamation point. Inside the lookahead [is any regex pattern].
The key to getting this to work is to tell sed to exclude what you don’t want to be output as well as specifying what you do want. This says: don’t default to printing each line (-n) exclude zero or more non-digits include one or more digits exclude one or more non-digits include one or more digits … Read more
This first removes all non-letter characters, folds to lowercase, then splits the input, doing all the work in a single line: Spaces are initially left in the input so the split will still work. By removing the rubbish characters before splitting, you avoid having to loop through the elements.
This can be done without regex: You can use str.isalnum: If you insist on using regex, other solutions will do fine. However note that if it can be done without using a regular expression, that’s the best way to go about it.
You did not tell which regex implementation you use. [a-z0-9] first character (\.?[a-z0-9]){5,} at least five following alphanumeric characters, maybe preceded by a dot (see @Daniel’s comment, copied from @Christopher’s answer) g(oogle)?mail gmail or googlemail (see @alroc’s answer) Probably you will want to use case-insensitive pattern matching, too. (/…/i in JavaScript.)
The metacharacter \b is an anchor like the caret and the dollar sign. It matches at a position that is called a “word boundary”. This match is zero-length. There are three different positions that qualify as word boundaries: Before the first character in the string, if the first character is a word character. After the last character in … Read more
In your regex, the two alternative branches are anchored separately: (^([a-zA-Z]){2}([0-9]){6}) – 2 letters and 6 digits at the start of the string | – or ([0-9]*)?$ – optional zero or more digits at the end of the string You need to adjust the boundaries of the group: See the regex demo. Now, the pattern will match: ^ – start … Read more