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Lodash _.trimStart


The lodash _.trimStart method is a utility function that removes any whitespace characters from the beginning of a string. This method is similar to _.trim but only targets the beginning of a string. It can be useful in many scenarios where you need to remove leading whitespaces from user input or other string data.

The basic syntax of this method is _.trimStart(string). It takes a single argument, string, which is the string to be trimmed. The method returns a new string with any leading whitespace removed.

Here is an example of how to use this method:

const greeting = '    Hello, World!';
const trimmedGreeting = _.trimStart(greeting);
console.log(trimmedGreeting); // 'Hello, World!'

In this example, the greeting string contains some leading whitespace characters before the actual greeting. The _.trimStart method is used to remove these characters, and the resulting string is stored in the trimmedGreeting variable.

The _.trimStart method can also accept an optional second argument, which specifies the characters to be removed from the beginning of the string. By default, this is set to whitespace characters, but you can pass in any other characters as needed.

Here is an example that uses this optional argument:

const greeting = '--Hello, World!';
const trimmedGreeting = _.trimStart(greeting, '-');
console.log(trimmedGreeting); // 'Hello, World!'

In this example, the greeting string has two hyphens at the beginning, followed by the greeting. The _.trimStart method is used with an additional argument of '- to specify that the hyphens should be removed. The resulting string is stored in the trimmedGreeting variable.

In summary, the _.trimStart method is a powerful utility function that can be used to remove leading whitespace characters from a string. It is a very useful tool in many scenarios and can make your code more efficient and reliable.