Convert string to object in javascript

Convert string to object in javascript
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#1

I just stumble upon this code snippet in YDKJS this and object prototypes.

var strPrimitive = "I am a string";
typeof strPrimitive; //"String"
strPrimitive instanceof String; //false

var strObject = new String("I am a string");
typeof StrObject; //"object"
strObject instanceof String; //ture

Object.prototype.toString.call(strObject); //[object string]

Can I understand this code snippet as it just converted the string value to an object value?


#2

All primitive values get converted (boxed) to objects so that you can use methods on them - "hello".toUppercase() for example - then get unboxed back to a primitive once the operation is complete.

This is how JS works, this is why you can apply methods to strings or numbers: everything gets treated as an object (even if it isn’t) when you want to do anything interesting to it.


#3

thanks! your explanation plus this answer I found on stackoverflow helped me understood this fully.

for anyone that is interested.


#4