How to usehasOwnProperty() in Javascript
The hasOwnProperty() method is used to check if an object has a specific property as its own property.
Example: Here, objectLength is incremented for each property encountered during the iteration. After the loop, the total length is then outputted to the console.
Javascript
// Creating an objectlet myObject = { key1: 'value1', key2: 'value2', key3: 'value3'};// Initializing a counter variablelet objectLength = 0;// Iterating through the object using hasOwnProperty()for (let key in myObject) { if (myObject.hasOwnProperty(key)) { objectLength++; }}// Outputting the length of the objectconsole.log("The length of the object is: " + objectLength); |
Output
The length of the object is: 3
How to Find the Length of JavaScript Dictionary ?
In JavaScript, you may often find a dictionary referred to as an object. Therefore, unlike arrays which have a length property, objects (dictionaries) do not have a built-in length property. However, the “length” of a given dictionary in JavaScript may be determined through counting the pairs of key-value it contains.
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