CreateUiDefinition string functions

  • Article

These functions to use with JSON strings.

concat

Concatenates one or more strings.

For example, if the output value of element1 if "Contoso", then this example returns the string "Demo Contoso app":

"[concat('Demo ', steps('step1').element1, ' app')]"

endsWith

Determines whether a string ends with a value.

The following sample returns true.

"[endsWith('tuvwxyz', 'xyz')]"

guid

Generates a globally unique string (GUID).

The following example returns a value like "c7bc8bdc-7252-4a82-ba53-7c468679a511":

"[guid()]"

indexOf

Returns the first position of a value within a string or -1 if not found.

The following sample returns 2.

"[indexOf('abcdef', 'cd')]"

lastIndexOf

Returns the last position of a value in a string or -1 if not found.

The following sample returns 3.

"[lastIndexOf('test', 't')]"

replace

Returns a string in which all occurrences of the specified string in the current string are replaced with another string.

The following example returns "Contoso.com web app":

"[replace('Contoso.net web app', '.net', '.com')]"

startsWith

Determines whether a string starts with a value.

The following sample returns true.

"[startsWith('abcdefg', 'ab')]"

substring

Returns the substring of the specified string. The substring begins at the specified index and has the specified length.

The following example returns "web":

"[substring('Contoso.com web app', 12, 3)]"

toLower

Returns a string converted to lowercase.

The following example returns "contoso":

"[toLower('CONTOSO')]"

toUpper

Returns a string converted to uppercase.

The following example returns "CONTOSO":

"[toUpper('contoso')]"

Next steps