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TypeError: someobject.somefunction(…).then is not a function

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1

I have created a utility function for getting the total size of the webtable using protractor and javascript.

this.getTableSize = function(tableElement, rowSelector, columnSelector)

 return 

 row: tableElement.all(rowSelector).count(),
 column : tableElement.all(columnSelector).count()
 

 ;

However on using the same function , i am geeting the error:

tableActions.getTableSize(table,by.css("tr"),by.css("th")).then(function(obj)
 console.log(obj);
 )

The error which i am getting is :

 TypeError: tableActions.getTableSize(...).then is not a function

javascript protractor angular-promise

share|improve this question

asked Mar 23 at 16:36

ashish chauhanashish chauhan

327

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Why do you call then on the result? It doesn't return a promise.
  
  – tkausl
  Mar 23 at 16:40
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  because it doesnt return a promise
  
  – Kunal Mukherjee
  Mar 23 at 16:52
  

  
  
  
  

add a comment | 

1

I have created a utility function for getting the total size of the webtable using protractor and javascript.

this.getTableSize = function(tableElement, rowSelector, columnSelector)

 return 

 row: tableElement.all(rowSelector).count(),
 column : tableElement.all(columnSelector).count()
 

 ;

However on using the same function , i am geeting the error:

tableActions.getTableSize(table,by.css("tr"),by.css("th")).then(function(obj)
 console.log(obj);
 )

The error which i am getting is :

 TypeError: tableActions.getTableSize(...).then is not a function

javascript protractor angular-promise

share|improve this question

asked Mar 23 at 16:36

ashish chauhanashish chauhan

327

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Why do you call then on the result? It doesn't return a promise.
  
  – tkausl
  Mar 23 at 16:40
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  because it doesnt return a promise
  
  – Kunal Mukherjee
  Mar 23 at 16:52
  

  
  
  
  

add a comment | 

I have created a utility function for getting the total size of the webtable using protractor and javascript.

this.getTableSize = function(tableElement, rowSelector, columnSelector)

 return 

 row: tableElement.all(rowSelector).count(),
 column : tableElement.all(columnSelector).count()
 

 ;

However on using the same function , i am geeting the error:

tableActions.getTableSize(table,by.css("tr"),by.css("th")).then(function(obj)
 console.log(obj);
 )

The error which i am getting is :

 TypeError: tableActions.getTableSize(...).then is not a function

javascript protractor angular-promise

share|improve this question

asked Mar 23 at 16:36

ashish chauhanashish chauhan

327

this.getTableSize = function(tableElement, rowSelector, columnSelector)

 return 

 row: tableElement.all(rowSelector).count(),
 column : tableElement.all(columnSelector).count()
 

 ;

tableActions.getTableSize(table,by.css("tr"),by.css("th")).then(function(obj)
 console.log(obj);
 )

 TypeError: tableActions.getTableSize(...).then is not a function

share|improve this question

asked Mar 23 at 16:36

ashish chauhanashish chauhan

327

share|improve this question

asked Mar 23 at 16:36

ashish chauhanashish chauhan

327

asked Mar 23 at 16:36

ashish chauhanashish chauhan

327

asked Mar 23 at 16:36

ashish chauhanashish chauhan

327

2 Answers
2

active

oldest

votes

0

You need to correct your method to handle the promises correctly.

I assume that tableElement.all(rowSelector).count() returns a promise else you will have to handle the callbacks;

this.getTableSize = function (tableElement, rowSelector, columnSelector) 
 return Promise.all([tableElement.all(rowSelector).count(), tableElement.all(columnSelector).count()]).then(function(data) 
 return 
 row: data[0],
 column: data[1]
 
 )
;

tableActions.getTableSize(table, by.css("tr"), by.css("th")).then(function (obj) 
 console.log(obj);
)

Promise.all does not return the array of resolved data with bluebird promises so use.

this.getTableSize = function (tableElement, rowSelector, columnSelector) 
 return ableElement.all(rowSelector).count().then(function(c) 
 return ableElement.all(columnSelector).count().then(function (c2) 
 return 
 row: c,
 column: c2
 
 )
 )
;

tableActions.getTableSize(table, by.css("tr"), by.css("th")).then(function (obj) 
 console.log(obj);
)

share|improve this answer

edited Mar 23 at 17:26

answered Mar 23 at 16:51

AZ_AZ_

1,041310

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hi, yes tableElement.all(rowSelector).count() returns a promise. I ran the below code as this.getTableSize = function (tableElement, rowSelector, columnSelector) return Promise.all(tableElement.all(rowSelector).count(), tableElement.all(columnSelector).count()). then(function(data) return row: data[0], column: data[1] ) .catch(function(reason) console.log(reason); ) ;. And now its giving error as:TypeError: [object Object] is not iterable and also obj comes out to be undefined
  
  – ashish chauhan
  Mar 23 at 17:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  are you using bluebird promise or native?@ashishchauhan
  
  – AZ_
  Mar 23 at 17:20
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @ashishchauhan use another snippet if yes.
  
  – AZ_
  Mar 23 at 17:24
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  No, native ones..
  
  – ashish chauhan
  Mar 23 at 17:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  my bad it must be an array of promises, updated the code for first snippet @ashishchauhan
  
  – AZ_
  Mar 23 at 17:28
  
  

  
  
  
  

 | 
show 6 more comments

0

The reason your code is failing is because you are using .then() on a function that does not return a promise.

Here's an example of a working promise:

let promise1 = new Promise( (resolve, reject) => 
 let dataReceivedSuccessfully = false; 

 if (dataReceivedSuccessfully) 
 resolve('Data Available!'); 
 
 if (!dataReceivedSuccessfully) 
 reject('Data Corrupted!'); 
 
) 

promise1.then( (success) => 
 console.log(success); 
).catch( (err) => 
 console.log(err);
)

You can use this in your code to return a resolve or reject, and then you will be able to use .then().

https://medium.freecodecamp.org/promises-in-javascript-explained-277b98850de

share|improve this answer

answered Mar 23 at 16:50

HybridHybrid

3,93221032

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks for the help:)
  
  – ashish chauhan
  Mar 23 at 17:50
  

  
  
  
  

add a comment | 

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0

You need to correct your method to handle the promises correctly.

I assume that tableElement.all(rowSelector).count() returns a promise else you will have to handle the callbacks;

this.getTableSize = function (tableElement, rowSelector, columnSelector) 
 return Promise.all([tableElement.all(rowSelector).count(), tableElement.all(columnSelector).count()]).then(function(data) 
 return 
 row: data[0],
 column: data[1]
 
 )
;

tableActions.getTableSize(table, by.css("tr"), by.css("th")).then(function (obj) 
 console.log(obj);
)

Promise.all does not return the array of resolved data with bluebird promises so use.

this.getTableSize = function (tableElement, rowSelector, columnSelector) 
 return ableElement.all(rowSelector).count().then(function(c) 
 return ableElement.all(columnSelector).count().then(function (c2) 
 return 
 row: c,
 column: c2
 
 )
 )
;

tableActions.getTableSize(table, by.css("tr"), by.css("th")).then(function (obj) 
 console.log(obj);
)

share|improve this answer

edited Mar 23 at 17:26

answered Mar 23 at 16:51

AZ_AZ_

1,041310

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hi, yes tableElement.all(rowSelector).count() returns a promise. I ran the below code as this.getTableSize = function (tableElement, rowSelector, columnSelector) return Promise.all(tableElement.all(rowSelector).count(), tableElement.all(columnSelector).count()). then(function(data) return row: data[0], column: data[1] ) .catch(function(reason) console.log(reason); ) ;. And now its giving error as:TypeError: [object Object] is not iterable and also obj comes out to be undefined
  
  – ashish chauhan
  Mar 23 at 17:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  are you using bluebird promise or native?@ashishchauhan
  
  – AZ_
  Mar 23 at 17:20
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @ashishchauhan use another snippet if yes.
  
  – AZ_
  Mar 23 at 17:24
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  No, native ones..
  
  – ashish chauhan
  Mar 23 at 17:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  my bad it must be an array of promises, updated the code for first snippet @ashishchauhan
  
  – AZ_
  Mar 23 at 17:28
  
  

  
  
  
  

 | 
show 6 more comments

0

You need to correct your method to handle the promises correctly.

I assume that tableElement.all(rowSelector).count() returns a promise else you will have to handle the callbacks;

this.getTableSize = function (tableElement, rowSelector, columnSelector) 
 return Promise.all([tableElement.all(rowSelector).count(), tableElement.all(columnSelector).count()]).then(function(data) 
 return 
 row: data[0],
 column: data[1]
 
 )
;

tableActions.getTableSize(table, by.css("tr"), by.css("th")).then(function (obj) 
 console.log(obj);
)

Promise.all does not return the array of resolved data with bluebird promises so use.

this.getTableSize = function (tableElement, rowSelector, columnSelector) 
 return ableElement.all(rowSelector).count().then(function(c) 
 return ableElement.all(columnSelector).count().then(function (c2) 
 return 
 row: c,
 column: c2
 
 )
 )
;

tableActions.getTableSize(table, by.css("tr"), by.css("th")).then(function (obj) 
 console.log(obj);
)

share|improve this answer

edited Mar 23 at 17:26

answered Mar 23 at 16:51

AZ_AZ_

1,041310

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hi, yes tableElement.all(rowSelector).count() returns a promise. I ran the below code as this.getTableSize = function (tableElement, rowSelector, columnSelector) return Promise.all(tableElement.all(rowSelector).count(), tableElement.all(columnSelector).count()). then(function(data) return row: data[0], column: data[1] ) .catch(function(reason) console.log(reason); ) ;. And now its giving error as:TypeError: [object Object] is not iterable and also obj comes out to be undefined
  
  – ashish chauhan
  Mar 23 at 17:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  are you using bluebird promise or native?@ashishchauhan
  
  – AZ_
  Mar 23 at 17:20
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @ashishchauhan use another snippet if yes.
  
  – AZ_
  Mar 23 at 17:24
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  No, native ones..
  
  – ashish chauhan
  Mar 23 at 17:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  my bad it must be an array of promises, updated the code for first snippet @ashishchauhan
  
  – AZ_
  Mar 23 at 17:28
  
  

  
  
  
  

 | 
show 6 more comments

You need to correct your method to handle the promises correctly.

I assume that tableElement.all(rowSelector).count() returns a promise else you will have to handle the callbacks;

this.getTableSize = function (tableElement, rowSelector, columnSelector) 
 return Promise.all([tableElement.all(rowSelector).count(), tableElement.all(columnSelector).count()]).then(function(data) 
 return 
 row: data[0],
 column: data[1]
 
 )
;

tableActions.getTableSize(table, by.css("tr"), by.css("th")).then(function (obj) 
 console.log(obj);
)

Promise.all does not return the array of resolved data with bluebird promises so use.

this.getTableSize = function (tableElement, rowSelector, columnSelector) 
 return ableElement.all(rowSelector).count().then(function(c) 
 return ableElement.all(columnSelector).count().then(function (c2) 
 return 
 row: c,
 column: c2
 
 )
 )
;

tableActions.getTableSize(table, by.css("tr"), by.css("th")).then(function (obj) 
 console.log(obj);
)

share|improve this answer

edited Mar 23 at 17:26

answered Mar 23 at 16:51

AZ_AZ_

1,041310

this.getTableSize = function (tableElement, rowSelector, columnSelector) 
 return Promise.all([tableElement.all(rowSelector).count(), tableElement.all(columnSelector).count()]).then(function(data) 
 return 
 row: data[0],
 column: data[1]
 
 )
;

tableActions.getTableSize(table, by.css("tr"), by.css("th")).then(function (obj) 
 console.log(obj);
)

this.getTableSize = function (tableElement, rowSelector, columnSelector) 
 return ableElement.all(rowSelector).count().then(function(c) 
 return ableElement.all(columnSelector).count().then(function (c2) 
 return 
 row: c,
 column: c2
 
 )
 )
;

tableActions.getTableSize(table, by.css("tr"), by.css("th")).then(function (obj) 
 console.log(obj);
)

this.getTableSize = function (tableElement, rowSelector, columnSelector) 
 return Promise.all([tableElement.all(rowSelector).count(), tableElement.all(columnSelector).count()]).then(function(data) 
 return 
 row: data[0],
 column: data[1]
 
 )
;

tableActions.getTableSize(table, by.css("tr"), by.css("th")).then(function (obj) 
 console.log(obj);
)

this.getTableSize = function (tableElement, rowSelector, columnSelector) 
 return Promise.all([tableElement.all(rowSelector).count(), tableElement.all(columnSelector).count()]).then(function(data) 
 return 
 row: data[0],
 column: data[1]
 
 )
;

tableActions.getTableSize(table, by.css("tr"), by.css("th")).then(function (obj) 
 console.log(obj);
)

this.getTableSize = function (tableElement, rowSelector, columnSelector) 
 return ableElement.all(rowSelector).count().then(function(c) 
 return ableElement.all(columnSelector).count().then(function (c2) 
 return 
 row: c,
 column: c2
 
 )
 )
;

tableActions.getTableSize(table, by.css("tr"), by.css("th")).then(function (obj) 
 console.log(obj);
)

this.getTableSize = function (tableElement, rowSelector, columnSelector) 
 return ableElement.all(rowSelector).count().then(function(c) 
 return ableElement.all(columnSelector).count().then(function (c2) 
 return 
 row: c,
 column: c2
 
 )
 )
;

tableActions.getTableSize(table, by.css("tr"), by.css("th")).then(function (obj) 
 console.log(obj);
)

share|improve this answer

edited Mar 23 at 17:26

answered Mar 23 at 16:51

AZ_AZ_

1,041310

answered Mar 23 at 16:51

AZ_AZ_

1,041310

answered Mar 23 at 16:51

AZ_AZ_

1,041310

0

The reason your code is failing is because you are using .then() on a function that does not return a promise.

Here's an example of a working promise:

let promise1 = new Promise( (resolve, reject) => 
 let dataReceivedSuccessfully = false; 

 if (dataReceivedSuccessfully) 
 resolve('Data Available!'); 
 
 if (!dataReceivedSuccessfully) 
 reject('Data Corrupted!'); 
 
) 

promise1.then( (success) => 
 console.log(success); 
).catch( (err) => 
 console.log(err);
)

You can use this in your code to return a resolve or reject, and then you will be able to use .then().

https://medium.freecodecamp.org/promises-in-javascript-explained-277b98850de

share|improve this answer

answered Mar 23 at 16:50

HybridHybrid

3,93221032

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks for the help:)
  
  – ashish chauhan
  Mar 23 at 17:50
  

  
  
  
  

add a comment | 

0

The reason your code is failing is because you are using .then() on a function that does not return a promise.

Here's an example of a working promise:

let promise1 = new Promise( (resolve, reject) => 
 let dataReceivedSuccessfully = false; 

 if (dataReceivedSuccessfully) 
 resolve('Data Available!'); 
 
 if (!dataReceivedSuccessfully) 
 reject('Data Corrupted!'); 
 
) 

promise1.then( (success) => 
 console.log(success); 
).catch( (err) => 
 console.log(err);
)

You can use this in your code to return a resolve or reject, and then you will be able to use .then().

https://medium.freecodecamp.org/promises-in-javascript-explained-277b98850de

share|improve this answer

answered Mar 23 at 16:50

HybridHybrid

3,93221032

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks for the help:)
  
  – ashish chauhan
  Mar 23 at 17:50
  

  
  
  
  

add a comment | 

The reason your code is failing is because you are using .then() on a function that does not return a promise.

Here's an example of a working promise:

let promise1 = new Promise( (resolve, reject) => 
 let dataReceivedSuccessfully = false; 

 if (dataReceivedSuccessfully) 
 resolve('Data Available!'); 
 
 if (!dataReceivedSuccessfully) 
 reject('Data Corrupted!'); 
 
) 

promise1.then( (success) => 
 console.log(success); 
).catch( (err) => 
 console.log(err);
)

You can use this in your code to return a resolve or reject, and then you will be able to use .then().

https://medium.freecodecamp.org/promises-in-javascript-explained-277b98850de

share|improve this answer

answered Mar 23 at 16:50

HybridHybrid

3,93221032

let promise1 = new Promise( (resolve, reject) => 
 let dataReceivedSuccessfully = false; 

 if (dataReceivedSuccessfully) 
 resolve('Data Available!'); 
 
 if (!dataReceivedSuccessfully) 
 reject('Data Corrupted!'); 
 
) 

promise1.then( (success) => 
 console.log(success); 
).catch( (err) => 
 console.log(err);
)

share|improve this answer

answered Mar 23 at 16:50

HybridHybrid

3,93221032

answered Mar 23 at 16:50

HybridHybrid

3,93221032

answered Mar 23 at 16:50

HybridHybrid

3,93221032