In JavaScript, toLowerCase() is a string method that is used to convert a string to lowercase. Because the toLowerCase() method is a method of the String object, it must be invoked through a particular instance of the String class. Syntax In JavaScript, the syntax for the toLowerCase()...
Method 1: Make First Letter Lowercase in JavaScript Using toLowerCase() and slice() Methods The “toLowerCase()”method converts the given string to lowercase letters, and the “slice()” method returns selected elements as a new array. These methods can be utilized to access the index of...
ThetoLowerCase()method in JavaScript converts all the uppercase characters in a string to lowercase characters and returns the result. The original string remains unchanged as this method returns a new string. Here's a simple example:
To lowercase the first letter, we need to take the first letter in the string by using thecharAt()method then chain it totoLowerCasemethod and concat with the string by slicing the first letter. constname="JAVASCRIPT";console.log(name.charAt(0).toLowerCase()+name.slice(1));// "jAVASC...
JavaScript Ceferino IV Villareal toLowerCase() & toUpperCase() on a string return that same string, with the cases converted to either lower or upper cases: var inconsistent =“Up AnD dOwn”; console.log(inconsistent.toLowerCase()); // “up and down” Copy Syntax // toLowerCase() my...
#TypeError: toLowerCase is not a function in JavaScript The "TypeError: toLowerCase is not a function" error occurs when we call thetoLowerCase()method on a value that is not a string. To solve the error, convert the value to a string or make sure to only call thetoLowerCasemethod ...
The toLowerCase() method is used to converts a string to lowercase.VersionImplemented in JavaScript 1.0 SyntaxtoLowerCase()ParameterNoneExample:In the following web document toLowerCase() method convert a given string to lowercase.<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"...
In JavaScript, you can use the Array.map() method to iterate over all elements and then use the string methods to change the case of the elements.Here is an example that demonstrates how to use the String.toUpperCase() method along with Array.map() to uppercase all elements in an array...
If it is a string, call the toLowerCase() method, otherwise return empty string. You can also check if type variable has toLowerCase method or not. For example: We can check if toLowerCase method exists in Number class. Check datatype using typeof 1 2 3 "toLowerCase" in Number...
Javascript String转Lowercase用法及代码示例 将字符串转换为小写JavaScript, 你可以使用String toLowerCase()方法。这个方法的作用正如它听起来的那样——它将字符串中的所有字符转换为小写。 例子:这里,String toLowerCase()被应用到myString变量,结果存储在lowercaseString多变的。经过这次操作后,lowercaseString将包含...