Updated May 27, 2023
Introduction to JavaScript object.is()
In javascript, one of the default methods is Object.is(), which is used to determine whether the user verifies the two-value comparison. It could be a string, integer, float, decimal, or whatever data type values are being compared; it can behold the two variable references and their properties. Assume that both variables are undefined, that their values are in number format, and that they are both commonly referred to as “NaN” forms, or that both variables are not NaN and have the same values.
Syntax:
In the javascript client-side validation code, it can validate the conditions in the browser itself. Checking the server side’s conditions for each client request is unnecessary. Among these, it can validate using some default methods and their syntax for code redundancy and reduce the complexity of the application.
<html>
<body>
<script>
var v1="";
var v2="";
document.write(Object.is(v1, v2));
---some javascript logics---
</script>
</body>
</html>The aforementioned codes represent the Object’s basic syntax. In the script, there is a () method that can be used for validation reasons, such as validating the conditions with alternative sequences.
How does JavaScript object.is() method works?
The javascript Object.is() method is typically used to determine whether the values of two datatypes should be compared and to display the result in the browser. The two datatype values may be in any format, like string, integer, etc. Sometimes it includes both zeros and non-zero numbers in the variable values in these default method Objects.is(). We also validate the values in the single variable itself if suppose the variable contains key values pair. It may be an integer, strings, special characters or symbols, etc.
I suppose we are not using the Object.is() method, and we used “===” three equals operators, also called the strict comparison operator in the javascript. When we compared the Object.js and strict comparison operator, it behaves only with the exact scenarios, and the same will be fetching the values like NaN and +0/-0, i.e.). It uses the operators like positive and negative symbols in variable values. Because of Object.is() method. When we compare these values, the outcome will be undefined, null, or both types of values are either true or false, like a Boolean condition if both values are in string format and we have already calculated the string lengths. It’s also the same, and characters are also the same in the same order; it’s also an important condition; another important one is both variables are in the string format has the same object, which means both the objects have the same reference.
Examples to Implement JavaScript object.is()
Below are the examples :
Example #1
Code:
<!DOCTYPE html>
<html>
<body>
<script>
if (!Object.is) {
Object.is = function(i, j) {
if (i === j) {
return i !== 0 || 1 / i === 1 / j;
} else {
return i !== i && j !== j;
}
};
}
var first = { p: 1,q:3,r:4 };
var second = { a: 5,b:6,c:4 };
document.write(Object.is(first, second));
document.write(Object.is(first, second));
</script>
</body>
</html>Output:
Example #2
Code:
<!DOCTYPE html>
<html>
<body>
<script>
if (!Object.is) {
Object.is = function(i, j) {
if (i === j) {
return i !== 0 || 1 / i === 1 / j;
} else {
return i !== i && j !== j;
}
};
}
document.write(Object.is('sivaraman', 'srn'));
document.write(Object.is('arun', 'arun'));
document.write(Object.is('dadf', 'ddff'));
document.write(Object.is('sdafd', 'dafd'));
document.write(Object.is('ssd', 'ssd'));
document.write(Object.is('sdd', 'arsun'));
document.write(Object.is('sd', 'dsv'));
document.write(Object.is('dsfv', 'dsfd'));
document.write(Object.is('ds', 'dsfd'));
document.write(Object.is([], []));
document.write(Object.is('sivaraman', 098));
document.write(Object.is('sivaraman', 0978));
document.write(Object.is('sivaraman', 0985));
document.write(Object.is('sivaraman', 0938));
document.write(Object.is(NaN, 0/0));
document.write(Object.is('sivaraman', 0928));
document.write(Object.is(NaN, 0/0));
document.write(Object.is(NaN, 0/0));
document.write(Object.is(NaN, 0/0));
</script>
</body>
</html>Output:
Example #3
Code:
<!DOCTYPE html>
<html>
<body>
<script>
if (!Object.is) {
Object.is = function(i, j) {
if (i === j) {
return i !== 0 || 1 / i === 1 / j;
} else {
return i !== i && j !== j;
}
};
}
var first = { p: 1,q:3,r:4,'sivaraman':'srn','arun':'arun','dadf':'ddff','sdafd':'dafd','ssd':'ssd','sdd':'arsun','sd':'dsv','dsfv':'dsfd','ds':'dsfd','sivaraman':098,'sivaraman':0978,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,NaN:0/0,'[]':'[]','-0':'0','sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'sivaraman':0985,'sivaraman':0938,'sivaraman':0928,'arun':'arun','dadf':'ddff','sdafd':'sdafd','arun':'arun','dadf':'ddff','sdafd':'sdafd','arun':'arun','dadf':'ddff','sdafd':'sdafd','arun':'arun','dadf':'ddff','sdafd':'sdafd' };
document.write(Object.is(first, first));
</script>
</body>
</html>Output:
Explanation: Based on the user input it will validate the values and then reference the variables and then show the result as Boolean types like true or false. It satisfies all the conditions in the script, whereas it supports strings, numbers, and other special characters.
Advantages to JavaScript object.is()
Based on the requirements, we have developed web applications, and also we provide some validation for client perspective and security purposes. At the same time, each default methods of the script have its own merits, and the de-merits main thing merit is the best one because when we take de-merits, it will be the frequency of code lines, and memory consumption takes more.
- The benefit of the Object.is the () method that allows us can deploy the codes into the reusable modules.
- The” ===” operator and Object.is() of the same purpose when we use === operator in the conditional statement; it checks and returns the same values if we use Object.is the () method, it also checks the conditions, like the given variable values and its references in the script.
- The Reference will be calculated whenever we use Object.is the () method; it validates all the characters like strings, numbers, symbols, operators, etc.
- It can compare the single datatype variable values and multiple variable values.
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