Answers for "how to verify function exists in window object using Javascript"

js check if function exists

if (typeof yourFunctionName == 'function') { 
  yourFunctionName(); 
}

Posted by: Guest on March-28-2020

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

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