mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-14 20:37:55 -05:00
45 lines
1.2 KiB
Markdown
45 lines
1.2 KiB
Markdown
---
|
|
title: substr
|
|
# linktitle:
|
|
description: Extracts parts of a string from a specified character's position and returns the specified number of characters.
|
|
date: 2017-02-01
|
|
publishdate: 2017-02-01
|
|
lastmod: 2017-02-01
|
|
categories: [functions]
|
|
menu:
|
|
docs:
|
|
parent: "functions"
|
|
keywords: [strings]
|
|
aliases: []
|
|
signature: ["substr STRING START [LENGTH]"]
|
|
workson: []
|
|
hugoversion:
|
|
relatedfuncs: []
|
|
deprecated: false
|
|
---
|
|
|
|
It normally takes two parameters: `start` and `length`. It can also take one parameter: `start`, i.e. `length` is omitted, in which case the substring starting from start until the end of the string will be returned.
|
|
|
|
To extract characters from the end of the string, use a negative start number.
|
|
|
|
If `length` is given and is negative, that number of characters will be omitted from the end of string.
|
|
|
|
```
|
|
{{ substr "abcdef" 0 }} → "abcdef"
|
|
{{ substr "abcdef" 1 }} → "bcdef"
|
|
|
|
{{ substr "abcdef" 0 1 }} → "a"
|
|
{{ substr "abcdef" 1 1 }} → "b"
|
|
|
|
{{ substr "abcdef" 0 -1 }} → "abcde"
|
|
{{ substr "abcdef" 1 -1 }} → "bcde"
|
|
|
|
{{ substr "abcdef" -1 }} → "f"
|
|
{{ substr "abcdef" -2 }} → "ef"
|
|
|
|
{{ substr "abcdef" -1 1 }} → "f"
|
|
{{ substr "abcdef" -2 1 }} → "e"
|
|
|
|
{{ substr "abcdef" -3 -1 }} → "de"
|
|
{{ substr "abcdef" -3 -2 }} → "d"
|
|
```
|