![]() ![]() The amount of code you need to write is substantially less while also being able to pass in any string as an argument without writing repetitive code. The function then returns a new string with the first letter capitalized. let newGreeting = capFirstLetter + restOfGreeting Īnother way is to combine the steps from above and isolate them in a function. let restOfGreeting = myGreeting.slice(1) īy combining the two new variables with concatenation, you get a new string with only the first letter capitalized. ![]() ![]() Then save that operation to a new variable. A new string is returned without it but containing the rest of the characters – minus that first letter. This way, the first character is excluded altogether. In this case, the argument you should pass to slice() is an index of 1 since that is the index of the second letter. You want to start from the second letter until the end of the value. This creates a new string starting from the index specified until the end of the word. One way to do this is by using the slice() method. Next, you want to isolate and cut off that first character and keep the remainder of the string. Any characters that are not letters are unaffected by this function. let capFirstLetter = myGreeting.toUpperCase() Converts all letters in the specified text string to lowercase. Save this operation in a new variable called capFirstLetter. Then you call the toUpperCase() method on that specific letter.Īs a reminder, indexing in JavaScript (and most programming languages) starts at 0, so the first letter has an index of 0. You first locate and extract the first letter of that string by using its index. Say there is a variable called myGreeting with the string value of hello, in all lowercase letters. What if you want to make only the first letter of a string a capital?īelow is a simple example that shows you one way to do just that. How to capitalize only the first letter in a string in JavaScript console.log('I am shouting!'.toUpperCase()) Īny capital letters already in the string will not be affected and will remain unchanged when the toLowerCase() method gets called. This means that there will now be two strings: the original and the newly converted capitalized one. The string specified is converted to a new one whose contents consist of only all uppercase letters. The general syntax for calling the method looks like this: String.toUpper()Īs strings in JavaScript are immutable, the toLowerCase() method does not change the value of the string specified. The toUpperCase() method is similar to the toLowerCase() method but it instead converts the string value to uppercase. How to use the toUpperCase() method in JavaScript const anotherGreeting = 'GOOD MORNING!!' Ĭonsole.log(anotherGreeting.toLowerCase()) They are all then converted to lowercase when the toLowerCase() method is applied. The string in the example below consists of all capital letters. These letters preserve their original form. The string myGreeting consists of only one capital letter that gets converted to lowercase.Īny letters that are already lowercase are not affected by the toLowerCase() method, only uppercase ones. It means that the old, original string is not changed or affected in any way. The toLowerCase() method converts the string specified into a new one that consists of only lowercase letters and returns that value. The toLowerCase() method doesn't take in any parameters. The general syntax for the method looks like this: String.toLowerCase() The toLowerCase method converts a string to lowercase letters. Let's get started! How to use the toLowerCase() method in JavaScript We'll also go over how to make only the first letter in a word uppercase and how to make the first letter of every word in a sentence uppercase. It does not store any personal data.This article explains how to convert a string to lowercase and uppercase characters. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". ![]() The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. ![]()
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