Answers for "how to check if function exists in javascript"

7

javascript check if function exists

//check if sayHello() function exists
if (typeof sayHello === "function") { 
    // This function exists
}
Posted by: Guest on August-02-2019
2

js check if function exists

if (typeof yourFunctionName == 'function') { 
  yourFunctionName(); 
}
Posted by: Guest on March-28-2020
2

check if function exists javascript

if (typeof payment === "function")
{
  // Do something
}
Posted by: Guest on September-18-2019
1

javascript check if function exists

if (typeof sourceObj.someMethod === "function") { 
    // you are safe using the method
  	sourceObj.someMethod();
}
Posted by: Guest on May-02-2020
-2

function exists javascript

How to check if function exists in JavaScript?
Posted by: Guest on June-11-2021

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