Helper Functions

Helper Functions

These are functions that help in dealing with the variables. in addition to Built-in Helpers in Handlebars:

length

Get the length of a string.

Example

Code

Output

5

substring

Get a substring from a string between the start and end indices.

Example

Code

Output

hello

replace

Replace all occurrences of a search string with a replace string in the given string.

Example

Code

Output

hello there

date

Get the current date and time as a string.

Example

Code

Output

[current date and time]

truncate

Truncate a string to a specified length and append ‘…’.

Example

Code

Output

This is a ...

tail

Get the last specified number of characters from a string, prepending ‘…’.

Example

Code

Output

...ong text.  

split

Split a string into an array using the given separator.

Example

Code

Output

["apple","banana","orange"]  

join

Join an array of strings using the given separator.

Example

Code

Output

apple, banana, orange    

unique

Return an array containing only unique elements from the input array.

Example

Code

Output

["apple","banana","orange"]     

trim

Trim whitespace from both ends of a string.

Example

Code

Output

hello world    

getRandomFile

Get a random file matching the given pattern with content length within the specified range.

Example

Code

Output

filename: [random file name] 
content: [random file content]