javascript check if function exists
//check if sayHello() function exists
if (typeof sayHello === "function") {
// This function exists
}javascript check if function exists
//check if sayHello() function exists
if (typeof sayHello === "function") {
// This function exists
}check if function javascript
variableToCheck instanceof FunctionCopyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
