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You can use new.target pseudo-property to detect whether a function was called as a constructor(using the new operator) or as a regular function call.
1. If a constructor or function invoked using the new operator, new.target returns a reference to the constructor or function.
2. For function calls, new.target is undefined.
javascript
1function Myfunc() {
2
3if (new.target) {
4 console.log("called with new");
5} else {
6 console.log("not called with new");
7}
8}
9
10new Myfunc(); // called with new
11
12Myfunc(); // not called with new
13
14Myfunc.call({}); // not called with newAdvertisement
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JavaScript Coding Exercise 73
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