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The following is the difference between String() and .toString() in JS that I have compiled for you. Interested students can take a look.
We know that both String() and .toString() can be converted to string types, but there is still a difference between String() and .toString()
1. .toString() can convert all data into strings, but null and undefined must be excluded.
For example, convert false to string type
<script> var str = false.toString(); console.log(str, typeof str); </script>
The result returned is false, string
See if null and undefined can be converted into strings
<script> var str = null.toString(); console.log(str, typeof str); </script>
As a result, the program reports an error
<script> var str = undefined.toString(); console.log(str, typeof str); </script>
The program also reports an error
.toString() You can write a number in the brackets, representing the base, corresponding to the base string
Binary: .toString(2);
Octal: .toString(8);
Decimal: .toString(10);
Hexadecimal: .toString(16);
2. String() can convert null and undefined into strings, but there is no way Convert to hexadecimal string
For example, convert null to string
<script> var str = String(null); console.log(str, typeof str); </script>
The returned result is null, string
Convert undefined to string
<script> var str = String(undefined); console.log(str, typeof str); </script>
The returned result is undefined, string
The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.
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