Difference between “value.toString” and “value.toString()”

somewhere when I was going through a piece code I saw a line and I could not find any proper explanation of it on the internet.

value.toString and value.toString()

please if anyone could help me with the difference between the above two?

edited Nov 23 '18 at 12:11

elegant-user

1,86641434

asked Nov 23 '18 at 11:40

Divya Singh

144

1

The first statement verifies that value has a truthy value for its toString property and the second statement attempts to execute it as a function.

– André Dion
Nov 23 '18 at 11:43

@RıdvanSumset, huh?

– André Dion
Nov 23 '18 at 11:45

toString() is a method to convert a value to string. there is no such thing toString. maybe it's a property (or a method) under an object in your code.

– Rıdvan Sumset
Nov 23 '18 at 11:45

@AndréDion I edited my comment to make it clearer for you.

– Rıdvan Sumset
Nov 23 '18 at 11:51

add a comment |

somewhere when I was going through a piece code I saw a line and I could not find any proper explanation of it on the internet.

value.toString and value.toString()

please if anyone could help me with the difference between the above two?

edited Nov 23 '18 at 12:11

elegant-user

1,86641434

asked Nov 23 '18 at 11:40

Divya Singh

144

1

The first statement verifies that value has a truthy value for its toString property and the second statement attempts to execute it as a function.

– André Dion
Nov 23 '18 at 11:43

@RıdvanSumset, huh?

– André Dion
Nov 23 '18 at 11:45

toString() is a method to convert a value to string. there is no such thing toString. maybe it's a property (or a method) under an object in your code.

– Rıdvan Sumset
Nov 23 '18 at 11:45

@AndréDion I edited my comment to make it clearer for you.

– Rıdvan Sumset
Nov 23 '18 at 11:51

add a comment |

somewhere when I was going through a piece code I saw a line and I could not find any proper explanation of it on the internet.

value.toString and value.toString()

please if anyone could help me with the difference between the above two?

edited Nov 23 '18 at 12:11

elegant-user

1,86641434

asked Nov 23 '18 at 11:40

Divya Singh

144

somewhere when I was going through a piece code I saw a line and I could not find any proper explanation of it on the internet.

value.toString and value.toString()

please if anyone could help me with the difference between the above two?

javascript

edited Nov 23 '18 at 12:11

elegant-user

1,86641434

asked Nov 23 '18 at 11:40

Divya Singh

144

edited Nov 23 '18 at 12:11

elegant-user

1,86641434

asked Nov 23 '18 at 11:40

Divya Singh

144

edited Nov 23 '18 at 12:11

elegant-user

1,86641434

edited Nov 23 '18 at 12:11

elegant-user

1,86641434

edited Nov 23 '18 at 12:11

elegant-user

1,86641434

asked Nov 23 '18 at 11:40

Divya Singh

144

asked Nov 23 '18 at 11:40

Divya Singh

144

asked Nov 23 '18 at 11:40

Divya Singh

144

1

The first statement verifies that value has a truthy value for its toString property and the second statement attempts to execute it as a function.

– André Dion
Nov 23 '18 at 11:43

@RıdvanSumset, huh?

– André Dion
Nov 23 '18 at 11:45

toString() is a method to convert a value to string. there is no such thing toString. maybe it's a property (or a method) under an object in your code.

– Rıdvan Sumset
Nov 23 '18 at 11:45

@AndréDion I edited my comment to make it clearer for you.

– Rıdvan Sumset
Nov 23 '18 at 11:51

add a comment |

1

The first statement verifies that value has a truthy value for its toString property and the second statement attempts to execute it as a function.

– André Dion
Nov 23 '18 at 11:43

@RıdvanSumset, huh?

– André Dion
Nov 23 '18 at 11:45

toString() is a method to convert a value to string. there is no such thing toString. maybe it's a property (or a method) under an object in your code.

– Rıdvan Sumset
Nov 23 '18 at 11:45

@AndréDion I edited my comment to make it clearer for you.

– Rıdvan Sumset
Nov 23 '18 at 11:51

The first statement verifies that value has a truthy value for its toString property and the second statement attempts to execute it as a function.

– André Dion
Nov 23 '18 at 11:43

@RıdvanSumset, huh?

– André Dion
Nov 23 '18 at 11:45

toString() is a method to convert a value to string. there is no such thing toString. maybe it's a property (or a method) under an object in your code.

– Rıdvan Sumset
Nov 23 '18 at 11:45

@AndréDion I edited my comment to make it clearer for you.

– Rıdvan Sumset
Nov 23 '18 at 11:51

add a comment |

4 Answers
4

active

oldest

votes

There is nothing Like "toString" in javascript.
Whereas the function toString() is used to convert value into the String value.

var a = 10;

a.toString();

// Here a will be converted into String ("10")

answered Nov 23 '18 at 11:49

aditya agnihotri

“There is nothing Like "toString" in javascript. Whereas the function toString() [...]” - both are the same thing - foo.bar just references a method bar of the foo object, whereas foo.bar() would call the method.

– misorude
Nov 23 '18 at 11:52

toString returns the defination of the method. whereas toString() is a method of the Object Class

– aditya agnihotri
Nov 23 '18 at 12:33

add a comment |

This statement

value.toString

checks whether the variable value has a property named toString. This statement

value.toString()

retrieves the property named toString and invokes it as a method of value.

I suppose the intention here is to avoid exceptions in case the value lacks a toString method:

// If the value has a toString method, invoke it:

value.toString && value.toString()

(Note that I replaced and with the && operator.)

Normally, every JavaScript value will have a toString method (even numbers and Booleans!), so this extra test is unnecessary. Hypothetically one could construct an object where the toString property is explicitly erased:

var value = { toString: undefined };

and in this case, it would make sense to test for the existence of toString before attempting to invoke it.

answered Nov 23 '18 at 11:55

Pedro LM

45727

add a comment |

value.toString() -> It will convert any value to string and return that value.

value.toString -> It will work as a primitive value and it will create an object wrapper. That's why it will not give any error or warning instead it will return a reference to the toString method.

So in short value.toSting() will return a string and value.toString will return a reference to the toString method.

edited Nov 23 '18 at 11:56

answered Nov 23 '18 at 11:52

Kunal

16710

“and value.toString will return an undefined” - no, it will return a reference to the toString method.

– misorude
Nov 23 '18 at 11:53

Yes you are right it will return a reference to the toString method

– Kunal
Nov 23 '18 at 11:55

add a comment |

The value.toString is a function in JavaScript which can be used
as
value.toString()

If write and test value.toString in console you see below.

ƒ toString() { [native code] }

edited Nov 23 '18 at 12:10

answered Nov 23 '18 at 11:55

elegant-user

1,86641434

nope, value.toString() do not return that but toString does.

– Rıdvan Sumset
Nov 23 '18 at 12:01

add a comment |

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4 Answers
4

active

oldest

votes

4 Answers
4

active

oldest

votes

There is nothing Like "toString" in javascript.
Whereas the function toString() is used to convert value into the String value.

var a = 10;

a.toString();

// Here a will be converted into String ("10")

answered Nov 23 '18 at 11:49

aditya agnihotri

“There is nothing Like "toString" in javascript. Whereas the function toString() [...]” - both are the same thing - foo.bar just references a method bar of the foo object, whereas foo.bar() would call the method.

– misorude
Nov 23 '18 at 11:52

toString returns the defination of the method. whereas toString() is a method of the Object Class

– aditya agnihotri
Nov 23 '18 at 12:33

add a comment |

There is nothing Like "toString" in javascript.
Whereas the function toString() is used to convert value into the String value.

var a = 10;

a.toString();

// Here a will be converted into String ("10")

answered Nov 23 '18 at 11:49

aditya agnihotri

“There is nothing Like "toString" in javascript. Whereas the function toString() [...]” - both are the same thing - foo.bar just references a method bar of the foo object, whereas foo.bar() would call the method.

– misorude
Nov 23 '18 at 11:52

toString returns the defination of the method. whereas toString() is a method of the Object Class

– aditya agnihotri
Nov 23 '18 at 12:33

add a comment |

There is nothing Like "toString" in javascript.
Whereas the function toString() is used to convert value into the String value.

var a = 10;

a.toString();

// Here a will be converted into String ("10")

answered Nov 23 '18 at 11:49

aditya agnihotri

There is nothing Like "toString" in javascript.
Whereas the function toString() is used to convert value into the String value.

var a = 10;

a.toString();

// Here a will be converted into String ("10")

answered Nov 23 '18 at 11:49

aditya agnihotri

answered Nov 23 '18 at 11:49

aditya agnihotri

answered Nov 23 '18 at 11:49

aditya agnihotri

answered Nov 23 '18 at 11:49

aditya agnihotri

“There is nothing Like "toString" in javascript. Whereas the function toString() [...]” - both are the same thing - foo.bar just references a method bar of the foo object, whereas foo.bar() would call the method.

– misorude
Nov 23 '18 at 11:52

toString returns the defination of the method. whereas toString() is a method of the Object Class

– aditya agnihotri
Nov 23 '18 at 12:33

add a comment |

“There is nothing Like "toString" in javascript. Whereas the function toString() [...]” - both are the same thing - foo.bar just references a method bar of the foo object, whereas foo.bar() would call the method.

– misorude
Nov 23 '18 at 11:52

toString returns the defination of the method. whereas toString() is a method of the Object Class

– aditya agnihotri
Nov 23 '18 at 12:33

“There is nothing Like "toString" in javascript. Whereas the function toString() [...]” - both are the same thing - foo.bar just references a method bar of the foo object, whereas foo.bar() would call the method.

– misorude
Nov 23 '18 at 11:52

toString returns the defination of the method. whereas toString() is a method of the Object Class

– aditya agnihotri
Nov 23 '18 at 12:33

add a comment |

This statement

value.toString

checks whether the variable value has a property named toString. This statement

value.toString()

retrieves the property named toString and invokes it as a method of value.

I suppose the intention here is to avoid exceptions in case the value lacks a toString method:

// If the value has a toString method, invoke it:

value.toString && value.toString()

(Note that I replaced and with the && operator.)

var value = { toString: undefined };

and in this case, it would make sense to test for the existence of toString before attempting to invoke it.

answered Nov 23 '18 at 11:55

Pedro LM

45727

add a comment |

This statement

value.toString

checks whether the variable value has a property named toString. This statement

value.toString()

retrieves the property named toString and invokes it as a method of value.

I suppose the intention here is to avoid exceptions in case the value lacks a toString method:

// If the value has a toString method, invoke it:

value.toString && value.toString()

(Note that I replaced and with the && operator.)

var value = { toString: undefined };

and in this case, it would make sense to test for the existence of toString before attempting to invoke it.

answered Nov 23 '18 at 11:55

Pedro LM

45727

add a comment |

This statement

value.toString

checks whether the variable value has a property named toString. This statement

value.toString()

retrieves the property named toString and invokes it as a method of value.

I suppose the intention here is to avoid exceptions in case the value lacks a toString method:

// If the value has a toString method, invoke it:

value.toString && value.toString()

(Note that I replaced and with the && operator.)

var value = { toString: undefined };

and in this case, it would make sense to test for the existence of toString before attempting to invoke it.

answered Nov 23 '18 at 11:55

Pedro LM

45727

This statement

value.toString

checks whether the variable value has a property named toString. This statement

value.toString()

retrieves the property named toString and invokes it as a method of value.

I suppose the intention here is to avoid exceptions in case the value lacks a toString method:

// If the value has a toString method, invoke it:

value.toString && value.toString()

(Note that I replaced and with the && operator.)

var value = { toString: undefined };

and in this case, it would make sense to test for the existence of toString before attempting to invoke it.

answered Nov 23 '18 at 11:55

Pedro LM

45727

answered Nov 23 '18 at 11:55

Pedro LM

45727

answered Nov 23 '18 at 11:55

Pedro LM

45727

answered Nov 23 '18 at 11:55

Pedro LM

45727

add a comment |

value.toString() -> It will convert any value to string and return that value.

So in short value.toSting() will return a string and value.toString will return a reference to the toString method.

edited Nov 23 '18 at 11:56

answered Nov 23 '18 at 11:52

Kunal

16710

“and value.toString will return an undefined” - no, it will return a reference to the toString method.

– misorude
Nov 23 '18 at 11:53

Yes you are right it will return a reference to the toString method

– Kunal
Nov 23 '18 at 11:55

add a comment |

value.toString() -> It will convert any value to string and return that value.

So in short value.toSting() will return a string and value.toString will return a reference to the toString method.

edited Nov 23 '18 at 11:56

answered Nov 23 '18 at 11:52

Kunal

16710

“and value.toString will return an undefined” - no, it will return a reference to the toString method.

– misorude
Nov 23 '18 at 11:53

Yes you are right it will return a reference to the toString method

– Kunal
Nov 23 '18 at 11:55

add a comment |

value.toString() -> It will convert any value to string and return that value.

So in short value.toSting() will return a string and value.toString will return a reference to the toString method.

edited Nov 23 '18 at 11:56

answered Nov 23 '18 at 11:52

Kunal

16710

value.toString() -> It will convert any value to string and return that value.

So in short value.toSting() will return a string and value.toString will return a reference to the toString method.

edited Nov 23 '18 at 11:56

answered Nov 23 '18 at 11:52

Kunal

16710

edited Nov 23 '18 at 11:56

answered Nov 23 '18 at 11:52

Kunal

16710

answered Nov 23 '18 at 11:52

Kunal

16710

answered Nov 23 '18 at 11:52

Kunal

16710

“and value.toString will return an undefined” - no, it will return a reference to the toString method.

– misorude
Nov 23 '18 at 11:53

Yes you are right it will return a reference to the toString method

– Kunal
Nov 23 '18 at 11:55

add a comment |

“and value.toString will return an undefined” - no, it will return a reference to the toString method.

– misorude
Nov 23 '18 at 11:53

Yes you are right it will return a reference to the toString method

– Kunal
Nov 23 '18 at 11:55

“and value.toString will return an undefined” - no, it will return a reference to the toString method.

– misorude
Nov 23 '18 at 11:53

Yes you are right it will return a reference to the toString method

– Kunal
Nov 23 '18 at 11:55

add a comment |

The value.toString is a function in JavaScript which can be used
as
value.toString()

If write and test value.toString in console you see below.

ƒ toString() { [native code] }

edited Nov 23 '18 at 12:10

answered Nov 23 '18 at 11:55

elegant-user

1,86641434

nope, value.toString() do not return that but toString does.

– Rıdvan Sumset
Nov 23 '18 at 12:01

add a comment |

The value.toString is a function in JavaScript which can be used
as
value.toString()

If write and test value.toString in console you see below.

ƒ toString() { [native code] }

edited Nov 23 '18 at 12:10

answered Nov 23 '18 at 11:55

elegant-user

1,86641434

nope, value.toString() do not return that but toString does.

– Rıdvan Sumset
Nov 23 '18 at 12:01

add a comment |

The value.toString is a function in JavaScript which can be used
as
value.toString()

If write and test value.toString in console you see below.

ƒ toString() { [native code] }

edited Nov 23 '18 at 12:10

answered Nov 23 '18 at 11:55

elegant-user

1,86641434

The value.toString is a function in JavaScript which can be used
as
value.toString()

If write and test value.toString in console you see below.

ƒ toString() { [native code] }

edited Nov 23 '18 at 12:10

answered Nov 23 '18 at 11:55

elegant-user

1,86641434

edited Nov 23 '18 at 12:10

answered Nov 23 '18 at 11:55

elegant-user

1,86641434

answered Nov 23 '18 at 11:55

elegant-user

1,86641434

answered Nov 23 '18 at 11:55

elegant-user

1,86641434

nope, value.toString() do not return that but toString does.

– Rıdvan Sumset
Nov 23 '18 at 12:01

add a comment |

nope, value.toString() do not return that but toString does.

– Rıdvan Sumset
Nov 23 '18 at 12:01

nope, value.toString() do not return that but toString does.

– Rıdvan Sumset
Nov 23 '18 at 12:01

add a comment |

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