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If I have a string like so:
var str = 'Arthropoda_Arachnida_Zodariidae_Habronestes_hunti';
How can I get just the last part of the string after the last underscore?
And in the case there are no underscores just return the original string.
In this case I want just 'hunti'
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To remove the underscores from a string, call the replaceAll() method on the string, passing it an underscore as the first parameter, and an empty string as the second, e.g. replaceAll('_', '') . The replaceAll method will return a new string, where all underscores are removed. Copied!
Use the String. replaceAll method to replace all spaces with underscores in a JavaScript string, e.g. string. replaceAll(' ', '_') . The replaceAll method returns a new string with all whitespace characters replaced by underscores.
Adding Underscore to a Node. Once added, underscore can be referred in any of the Node. js modules using the CommonJS syntax: var _ = require('underscore'); Now we can use the object underscore (_) to operate on objects, arrays and functions.
Underscore ( _ ) is just a plain valid character for variable/function name, it does not bring any additional feature. However, it is a good convention to use underscore to mark variable/function as private.
You can use a regular expression:
'Arthropoda_Arachnida_Zodariidae_Habronestes_hunti'.match(/[^_]*$/)[0];
var index = str.lastIndexOf("_");
var result = str.substr(index+1);
It's very simple. Split the string by the underscore, and take the last element.
var last = str.split("_").pop();
This will even work when the string does not contain any underscores (it returns the original string, as desired).
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