Javascript dynamically call function from string
Can I dynamically call an object method having the method name as a string? I would imagine it like this: Show
asked Mar 24, 2012 at 19:51
Mikulas DiteMikulas Dite 7,6299 gold badges57 silver badges97 bronze badges if the name of the property is stored in a variable, use
answered Mar 24, 2012 at 19:55
Karoly HorvathKaroly Horvath 92.6k11 gold badges113 silver badges173 bronze badges 4
Properties of objects can be accessed through the array notation:
answered Mar 24, 2012 at 19:55
0 When we call a function inside an object, we need provide the name of the function as a String.
answered Dec 24, 2018 at 17:44
s.ns.n 6631 gold badge9 silver badges17 bronze badges 2 method can be call with eval answered Mar 24, 2012 at 20:04
1 I would like to leave an example here for this. For example; i want to call a dynamically check method while submitting the form.
answered May 8, 2020 at 23:43
ahmetiahmeti 3254 silver badges9 bronze badges
Unfortunately, Despite the warnings, However, what if we have a function name in a string, e.g.
How do we execute the The simplest and safest execution-without-eval solution is a range of conditions, e.g.
It’s safe, but fairly inefficient and painful to write if you have dozens of possible function calls. A better solution is to use the
You can perform other checks if necessary to ensure the function has an expected name. What if the function we want to call has parameters — perhaps stored in an array? No problem; we simply use the
So that’s another reason to stop using How do you call a function from a string in JavaScript?There are two methods to call a function from string stored in a variable. The first one is by using the window object method and the second one is by using eval() method. The eval() method is older and it is deprecated.
How do you call a function dynamically?To call a the function dynamically, all you have to do is creating an instance of the class you're in and call the function using the dynamic instance created. For example, we have a class and a function: class Ersoy.
How to call a function using variable in JavaScript?The JavaScript call() Method
The call() method is a predefined JavaScript method. It can be used to invoke (call) a method with an owner object as an argument (parameter). With call() , an object can use a method belonging to another object.
How do you call a function name?Define a function named "myFunction", and make it display "Hello World!" in the
element. Hint: Use the function keyword to define the function (followed by a name, followed by parentheses). Place the code you want executed by the function, inside curly brackets. Then, call the function. |