JavaScript String Replace All

The JavaScript function for String Replace replaces the first occurrence in the string. The function is similar to the php function str_replace and takes two simple parameters. The first parameter is the pattern to find and the second parameter is the string to replace the pattern with when found. The javascript function does not Replace All...

str = str.replace(”find”,”replace”)

To ReplaceAll you have to do it a little differently. To replace all occurrences in the string, use the g modifier like this:

str = str.replace(/find/g,”replace”)

Search and Replace Tricks

reference : link

Suppress all empty lines

Find: "^\n" (without quotes)
Replace: "" (without quotes)
RegExp
Note: You may have to repeat it several times to remove all empty lines (until the editor can't find the string to replace), because only the first one of a series of consecutive empty lines will be edited.

Suppress all non-empty lines

Find: "^.+$" (without quotes)
Replace: "" (without quotes)
RegExp

Comment out lines

Find: "^" (without quotes)
Replace: "// " (without quotes)
RegExp
Note: Empty lines will not be affected. This example actually adds a text at the beginning of every non empty line, the comment symbol used ("//") is the one of PHP.

Comment lines

Find: "$" (without quotes)
Replace: " // Comment here" (without quotes)
RegExp
Note: Empty lines will not be affected. This example actually adds a text at the end of every non empty line, the comment symbol used ("//") is the one of PHP.

Join lines

Find: "\n" (without quotes)
Replace: "," (without quotes)
RegExp
Note: Turn separated lines into comma separated values. Empty lines will be affected as well.

Split lines

Find: "," (without quotes)
Replace: "\n" (without quotes)
RegExp
Note: Turn comma separated values into separated lines. Consecutive commas will generate empty lines.

Remove all leading spaces and tabs from every line

Find: "^[ \t]+" (without quotes)
Replace: "" (without quotes)
RegExp
Note: this will obviously remove any indentation

Remove all trailing spaces and tabs from every line

Find: "[ \t]+$" (without quotes)
Replace: "" (without quotes)
RegExp

Remove consecutive spaces

Find: " +" (without quotes)
Replace: " " (without quotes)
RegExp
Example: before: "this is an example", after: "this is an example"

Fix punctuation

Find: "([\.\,\;\:\?\!])([a-zA-Z])" (without quotes)
Replace: "\1 \2" (without quotes)
RegExp
Example: before: "How are you?I'm fine,thanks.", after: "How are you? I'm fine, thanks."
Note: If you want to use this statement in a Wiki context, remove "\:" from the search string, otherwise you may break Wiki metatags, for example [[Category:Example]] will be replaced by [[Category: Example]]

Wrap a tag pair around a text

Find: "(bold)" (without quotes)
Replace: "\1" (without quotes)
RegExp
Example: before: "bold", after: "bold"

Wrap a tag pair around every line

Find: "^(.+)$" (without quotes)
Replace: "

\1

" (without quotes)
RegExp
Note: this example wraps the tag pair

every line to create a list of items; you'd probably want to apply changes only to a selected text.

Delete everything inside a tag pair (keeping tags)

Find: "().+()" (without quotes)
Replace: "\1\2" (without quotes)
RegExp
Note: Tags must be on the same line.
Example: before: "this is an example", after: "this example"

Delete everything inside a tag pair (removing tags too)

Find: ".+" (without quotes)
Replace: "" (without quotes)
RegExp
Note: Tags must be on the same line.
Example: before: "this is an example", after: "this example"

Delete all lines containing a given string

Find: "^.*STRING.*$" (without quotes)
Replace: "" (without quotes)
RegExp
Note: Lines will be emptied but not suppressed. See #Suppress all empty lines to suppress empty lines.

Replace only the first occurrence of a character

Find: ";(.*)" (without quotes)
Replace: "|\1" (without quotes)
RegExp
Note: In this example, only the first occurrence of ";" for each line will be replaced with "|".
Example: before: "this;is;an;example", after: "this|is;an;example"

Replace only the last occurrence of a character

Find: "(.*);" (without quotes)
Replace: "\1|" (without quotes)
RegExp
Note: In this example, only the last occurrence of ";" for each line will be replaced with "|".
Example: before: "this;is;an;example", after: "this;is;an|example"

Truncate a string after the first occurrence of a marker (keeping the marker)

Find: "^([^;]*;).*$" (without quotes)
Replace: "\1" (without quotes)
RegExp
Note: In this example, the marker is ";".
Example: before: "this;is;an;example", after: "this;"

Truncate a string at the first occurrence of a marker (removing the marker too)

Find: "^([^;]*);+.*$" (without quotes)
Replace: "\1" (without quotes)
RegExp
Note: In this example, the marker is ";".
Example: before: "this;is;an;example", after: "this"

Truncate a string after the last occurrence of a marker (keeping the marker)

Find: "^(.*;).*$" (without quotes)
Replace: "\1" (without quotes)
RegExp
Note: In this example, the marker is ";".
Example: before: "this;is;an;example", after: "this;is;an;"

Truncate a string at the last occurrence of a marker (removing the marker too)

Find: "^(.*);.*$" (without quotes)
Replace: "\1" (without quotes)
RegExp
Note: In this example, the marker is ";".
Example: before: "this;is;an;example", after: "this;is;an"

Truncate a string before than the first occurrence of a marker (keeping the marker)

Find: "^[^;]*(;.*)$" (without quotes)
Replace: "\1" (without quotes)
RegExp
Note: In this example, the marker is ";".
Example: before: "this;is;an;example", after: ";is;an;example"

Truncate a string up to the first occurrence of a marker (removing the marker too)

Find: "^[^;]*;(.*)$" (without quotes)
Replace: "\1" (without quotes)
RegExp
Note: In this example, the marker is ";".
Example: before: "this;is;an;example", after: "is;an;example"

Truncate a string before than the last occurrence of a marker (keeping the marker)

Find: "^.*(;.*)$" (without quotes)
Replace: "\1" (without quotes)
RegExp
Note: In this example, the marker is ";".
Example: before: "this;is;an;example", after: ";example"

Truncate a string up to the last occurrence of a marker (removing the marker too)

Find: "^.*;(.*)$" (without quotes)
Replace: "\1" (without quotes)
RegExp
Note: In this example, the marker is ";".
Example: before: "this;is;an;example", after: "example"

Turn a CSV table into a list of PHP if conditions

"^([^\,]+)\,([^\,]+)\,([^\,]+)$" (without quotes)
"elseif (vcmp$=="\1") {$v2="\2"; $v3="\3";}" (without quotes)
RegExp
Example: before: "Italy,Rome,Euro", after: elseif (vcmp$=="Italy") {$v2="Rome"; $v3="Euro";}
Note: In this example, there are three values per record, and the CSV separator is a comma (,), you may need to replace it with another character like \t for tab. Remember to change the first "elseif" to "if".

Truncate last value from a MySQL INSERT query

Find: "(VALUES \(.+), *.+\);" (without quotes)
Replace: "\1);" (without quotes)
RegExp
Example: before: "INSERT INTO table VALUES ('value1','value2','value3');", after: "INSERT INTO table VALUES ('value1','value2');"

Keep only last value in a MySQL INSERT query

Find: "(VALUES \(.+,)(.+\);)" (without quotes)
Replace: "VALUES (\2" (without quotes)
RegExp
Example: before: "INSERT INTO table VALUES ('value1','value2','value3');", after: "INSERT INTO table VALUES ('value3');"

Turn MySQL fields into empty values

Find: "`[^`]*`([\,\)\'\"])" (without quotes)
Replace: "''\1" (without quotes)
RegExp
Example: before: "INSERT INTO table (`phone`,`phonecell`,`fax`) VALUES (`phone`,`phonecell`,`fax`);", after: "INSERT INTO table (`phone`,`phonecell`,`fax`) VALUES ('','','');". (Only the second instance of "(`phone`,`phonecell`,`fax`)" must be selected and search and replace must be applied to such selection).
Note: this is meant to replicate the values in a INSERT query according to the specified fields (and use the empty values as a placeholder): you simply need to copy the fields and past them after VALUES, and then replace them this way.

Wikification: Link all elements of a list

Find: "(\*)(.*)$" (without quotes)
Replace: "\1[[\2]]" (without quotes)
RegExp
Example: before: "*Example", after: "*[[Example]]"

Wikification: Link all elements of a list, changing the linked text

Find: "(\*)(.*)$" (without quotes)
Replace: "\1[[\2_(category)|\2]]" (without quotes)
RegExp
Example: before: "*Example", after: "*[[Example_(category)|Example]]"