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How to Compare 2 Objects in JavaScript 🎉Objects are reference types so you can’t just use === or == to compare 2 objects. One quick way to compare if 2 objects have the same key value, is using JSON.stringify. Another way is using Lodash isEqual function 👏...
However, keep in mind that the comparison will return false if the arrays have elements of different data types, even if their values are the same. Q: How can I compare arrays by reference? A: To compare arrays by reference, you can use the == or === operators. These operators will...
When you’re working with JavaScript, sometimes you need to access query string parameters in your script. Let’s go through the following JavaScript example. functiongetQueryStringValues(key){vararrParamValues=[];varurl=window.location.href.slice(window.location.href.indexOf('?')+1).split('&'...
Last, use thejoin()method to group values of the array into the string. Thejoin()methodis a built-in method provided by JavaScript. This method creates and returns a new string by concatenating all the elements in an array (or array-like object), separated by commas or a specified delimi...
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In JavaScript, null represents an intentional absence of a value, indicating that a variable has been declared with a null value on purpose. On the other hand, undefined represents the absence of any object value that is unintentional. A null check determines whether a variable has a null valu...
In JavaScript, the following values are considered “falsy”: false 0 (zero) "" (empty string) null undefined NaN So, if you use if(str) statement, it will return true for any string which is not “falsy”. It is important to note that when using the == operator, the string “fals...
JSON.stringify()to Compare Arrays in JavaScript Another technique to compare two arrays is to first cast them to the string type and then compare them.JSONis used to transfer data from/to a web server, but we can use its method here. We can do this is usingJSON.stringify()that convert...
Topic: JavaScript / jQueryPrev|NextAnswer: Use the getTime() MethodYou can simply use the getTime() method to compare two dates in JavaScript. This method returns the number of milliseconds since the ECMAScript epoch (January 1, 1970 at 00:00:00 UTC)....