Introduction to JavaScript object.is()
In javascript Object.is() is one of the default methods and mainly is used to determine whether the user validates the two values comparison it may be the string, integer, float, decimal, etc whatever the data type values are compared it can behold the two variable references and their properties. suppose if both the variables are undefined or sometimes the two variable values are in number format and both are sometimes called “NaN” format or it may be zero formats or it may be the condition like both the variables are not NaN and both are having the same values.
Syntax:
In javascript client-side validation code, it can be valid the conditions in the browser itself it does not necessary to check the conditions in the server-side for each client request. 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 above codes are the basic syntax for the Object.is a () method in the script it can be used for validation purposes it maybe checking the conditions with different sequences.
How does JavaScript object.is() method works?
The javascript Object.is() method is mainly used to determine whether the two datatypes values are to be compared and displayed the result in the browser. When the two values are comparing it can behold the reference of the left-hand side variable and its properties the two datatype values may be any of the formats like string, integer, etc. If the variable contains numbers means it validated sometimes it contains both zeros and non-zero numbers in the variable values in these default method Object.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, and special characters or symbols, etc. These values are compared and it can be performed the mathematical operations in the script.
I suppose we are not using the Object.is() method and we used “===” three equals operators and its also called the strict comparison operator in the javascript when we compared the Object.js and strict comparison operator it behaves only 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 it will display the result as undefined, null or both types of values are either true or false like Boolean condition if both the values are in string format as well as we already calculated the string lengths its also same, characters also same in the same order its also important condition, another important one is both variables are in the string format has the same object it 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: The above three examples we used the Object.is a () method in three different scenarios but basically we have validated the string values, numbers, and then special characters like operators, etc. Based on the user input it will validate the values and then reference of the variables and then shown the result as Boolean types like true or false. It satisfies all the conditions in the script whereas it supports both string, 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 prospective and security purposes. At the same time, each default methods of the script have their own merits and the de-merits main thing is the merits is best one because when we take de-merits it will be the frequency of code lines, memory consumption takes more.
- The benefit of the Object.is the () method allows us can deploy the codes into the reusable modules.
- Objects are also allowed to create the instances of each reusable modules in the script.
- 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, and operators, etc.
- It can compare the single datatype variable values as well as multiple variable values but the result will be the same as Boolean conditions even undefined values also checked.
Conclusion
When we used Objects in the programming it has a different set of methods that helps to modified, security purposes. We have reviewed the created and assigned objects and the same will be iterated with the help of keys and values of an object and freezed or sealed an object.