Home > Article > Web Front-end > Are javascript method names case sensitive?
Javascript method names are case-sensitive. This means that uppercase letters in a method name are different from lowercase letters, so the correct case must be used when calling the function. This is because in Javascript's syntax rules, identifiers (including method names) are case-sensitive.
For example, suppose we have the following code:
function sayHello() { console.log("Hello!"); } function SayHello() { console.log("Hello, again!"); } sayHello(); SayHello();
In this example, we have two functions, namely sayHello
and SayHello
. The first function name is lowercase, and the first letter of the second function name is uppercase. If we use wrong case while calling a function, we will get an error or the function will not be executed.
In the above example, we will call two functions, namely sayHello()
and SayHello()
. The first function call will print Hello!
, while the second function call will print Hello, again!
. This is because we used the correct function name and casing.
If we try to call Sayhello()
or sayhello()
, they will generate an error because these are different method names (Javascript treats them as separate identifier).
It should be noted that variable names and method names in Javascript are case-sensitive, so be sure to pay attention to case when writing code. The best practice is to follow a consistent naming convention, such as always using lowercase letters for method names, or using camelCase (e.g. sayHello
).
In short, Javascript method names are case-sensitive, so you must use the correct case when calling the function. This is part of the Javascript syntax rules and must be followed to avoid errors.
The above is the detailed content of Are javascript method names case sensitive?. For more information, please follow other related articles on the PHP Chinese website!