JAVASCRIPT

difference between == and === in javascript

0 == false   // true
0 === false  // false, because they are of a different type
1 == "1"     // true, automatic type conversion for value only
1 === "1"    // false, because they are of a different type
null == undefined // true
null === undefined // false
'0' == false // true
'0' === false // false

!= vs !== javascript

(0 ==  '0') // true
(0 === '0') // false

('' ==  0 ) // true, the string will implicitly be converted to an integer
('' === 0 ) // false, no implicit cast is being made

javascript == vs ===

/**
* In js :
* == it convert the variable values to the same data type before performing comparison.
* example : comparison between string and interger data type
*/
(5 == "5") // returns true

// === it does not convert data type of variable before performing comparison.
// example:
(5 === "5") // return false

Difference Between =, == And === In JavaScript

var number = 100;  // Here number variable assigned using = 

if (number == 100)
  // Here Comparision between two values using ==.
  // This will not check datatype irrespective of datatype it will do comparision  
  console.log("Both are equal");

else  
  console.log("Both are not equal");

if(number === "100")  //Here Comparision between two values using ===.
  // This will check datatype if it is same then it will do comparision otherwise it will go to else part  
  console.log("Both are equal");

else  
  console.log("Both are not equal");

/*
Output will be :- 
	Both are equal
	Both are equal
*/

== vs === in javascript

(==)[double equal]compare the only DATA , not TYPE (0(int) == "0"(string)) ==> true) ==> not checking DATATYPE 
(===)[triple equal ] compare strictly  DATA and TYPE (0 === "0" ==> false) ==> checking the DATATYPE first

difference between =, == and === in javascript

/*
= operator in javascript is called as assign operator. It is used to assign
value to a variable, it is used as: */
variable = "value"
/*      ^^^
here, as you can see, it is saying that variable should be assigned(=) the value
"value" */

/*
== operator in javascript is called the equals operator. It is used to compare
equals between two values, ignoring their types(number, string, boolean, etc.),
it is used as: */
   (5 == "5") // true
/* ^^^^^^^^^^
here, as you can see, it is asking that 5 is equal to "5", ignoring the type, it
returns true as their value is 5 (Note that "5" is converted to 5 for checking
for == comparator) */

/*
=== operator in javascript is called the strict equals operator. It is used to
compare euals between two values, considering their types(number, string,
boolean, stc.), it is used as: */
   (5 === "5") // false
/* ^^^^^^^^^^^
here, as you can see, it is asing that 5 is equal to "5", considering the type,
it returns false as their values is same, but their type is not (Note that "5"
is not converted into 5 for checking for === comparator) */

== vs === javascript

== Equal to (1 == 1, 1 == "1") // equal in value ("1" is a string)
=== Equal value and equal type (1 === 1 but, 1 !== "1" // not equal type

== vs === javascript

{
    "version": "0.1.0",
    "command": "node",
    "isShellCommand": true,
    "args": [
        "--harmony"
    ],

    "tasks": [
        {
            "taskName": "runFile",
            "suppressTaskName": true,
            "showOutput": "always",
            "problemMatcher": "$jshint",
            "args": ["${file}"]
        }
    ]
}