== and != are called comparison operators. They are used to compare two values and see whether they are the same (==) or check if they are different (!=). E.g.
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if (gender=="Male") alert("You are a man."); |
= is used to assign a value to a variable. E.g.
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myFavouriteNumber=5; |
To Sum it up…
An = sign is used to assign a value to a variable: e.g.
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var a=3; a=5+2; |
An == sign is used to compare if two values are equal e.g.
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if (a==3) { alert("a is equal to 3"); } else { alert("a is not equal to 3"); } |
A != sign is used to compare if two values are different e.g.
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if (a!=3) { alert("a is not equal to 3"); } else { alert("a is equal to 3"); } |
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