check object has property in typescript
const hero = {
name: 'Batman'
};
hero.hasOwnProperty('name'); // => true
hero.hasOwnProperty('realName'); // => falsecheck object has property in typescript
const hero = {
name: 'Batman'
};
hero.hasOwnProperty('name'); // => true
hero.hasOwnProperty('realName'); // => falsetypescript check if object has key
if ('key' in myObj)check if object has method javascript
if(typeof myObj.prop2 === 'function') {
alert("It's a function");
} else if (typeof myObj.prop2 === 'undefined') {
alert("It's undefined");
} else {
alert("It's neither undefined nor a function. It's a " + typeof myObj.prop2);
}Copyright © 2021 Codeinu
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