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JAVASCRIPT

function call

function world(params){
 	//Code to be executed when the function is called. 
}
world()

//Explaination
//'world' in the function is the name of the function.
//There are brackets after function name. Those are use to push parameters
//The forth line Calls the function named 'world'
Comment

call function

You need to install js2py or requests-html packages to run the JavaScript program from Python

//example :
//javaScript function : squareofNum()
code in python : 
import js2py

squareofNum = "function f(x) {return x*x;}"

result = js2py.eval_js(squareofNum)

print(result(5))
>>output : 25
Comment

Calling a Function

// function call
greet();
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function calls

const obj = {
  foo: 1,
  get bar() {
    return 2;
  }
};

let copy = Object.assign({}, obj); 
console.log(copy); 
// { foo: 1, bar: 2 }
// The value of copy.bar is obj.bar's getter's return value.

// This is an assign function that copies full descriptors
function completeAssign(target, ...sources) {
  sources.forEach(source => {
    let descriptors = Object.keys(source).reduce((descriptors, key) => {
      descriptors[key] = Object.getOwnPropertyDescriptor(source, key);
      return descriptors;
    }, {});
    
    // By default, Object.assign copies enumerable Symbols, too
    Object.getOwnPropertySymbols(source).forEach(sym => {
      let descriptor = Object.getOwnPropertyDescriptor(source, sym);
      if (descriptor.enumerable) {
        descriptors[sym] = descriptor;
      }
    });
    Object.defineProperties(target, descriptors);
  });
  return target;
}

copy = completeAssign({}, obj);
console.log(copy);
// { foo:1, get bar() { return 2 } }
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