Can I use alert box in return statement?

up vote
0
down vote

favorite

This is my code:

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  return alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name<input type="text" id="myname"><br> Phone

  <input type="text" id="myphone"><br> Country <input type="text" id="mycontry"><br> Mail

  <input type="text" id="mymail"><br>



  <button onclick="myFunction()">Try it</button>

</div>

If yes, why don't I get expected result? Can anyone please see my code and correct me?

edited Nov 9 at 7:53

barbsan

2,1481022

asked Nov 8 at 9:10

user10493493

alert is a browser's way to notify user of something. It does not return anything
– Rajesh
Nov 8 at 9:14

Please explain more of what you are trying to do, and perhaps more of your code and we might be able to help. As a guess, try to return alert(name + " , " + phone + " , " + country + " , " + mail);, then you could run alert(myFunction());
– Tim Rooke
Nov 8 at 9:29

alert() does not return anything. I guess you could say that it returns undefined
– marvinIsSacul
Nov 8 at 9:35

Firstly thanks a lot.
– user10493493
Nov 9 at 5:28

Actually I have to read user registrations details and show them in alert box.
– user10493493
Nov 9 at 6:14

|
show 2 more comments

up vote
0
down vote

favorite

This is my code:

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  return alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name<input type="text" id="myname"><br> Phone

  <input type="text" id="myphone"><br> Country <input type="text" id="mycontry"><br> Mail

  <input type="text" id="mymail"><br>



  <button onclick="myFunction()">Try it</button>

</div>

If yes, why don't I get expected result? Can anyone please see my code and correct me?

edited Nov 9 at 7:53

barbsan

2,1481022

asked Nov 8 at 9:10

user10493493

alert is a browser's way to notify user of something. It does not return anything
– Rajesh
Nov 8 at 9:14

Please explain more of what you are trying to do, and perhaps more of your code and we might be able to help. As a guess, try to return alert(name + " , " + phone + " , " + country + " , " + mail);, then you could run alert(myFunction());
– Tim Rooke
Nov 8 at 9:29

alert() does not return anything. I guess you could say that it returns undefined
– marvinIsSacul
Nov 8 at 9:35

Firstly thanks a lot.
– user10493493
Nov 9 at 5:28

Actually I have to read user registrations details and show them in alert box.
– user10493493
Nov 9 at 6:14

|
show 2 more comments

up vote
0
down vote

favorite

This is my code:

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  return alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name<input type="text" id="myname"><br> Phone

  <input type="text" id="myphone"><br> Country <input type="text" id="mycontry"><br> Mail

  <input type="text" id="mymail"><br>



  <button onclick="myFunction()">Try it</button>

</div>

If yes, why don't I get expected result? Can anyone please see my code and correct me?

edited Nov 9 at 7:53

barbsan

2,1481022

asked Nov 8 at 9:10

user10493493

This is my code:

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  return alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name<input type="text" id="myname"><br> Phone

  <input type="text" id="myphone"><br> Country <input type="text" id="mycontry"><br> Mail

  <input type="text" id="mymail"><br>



  <button onclick="myFunction()">Try it</button>

</div>

If yes, why don't I get expected result? Can anyone please see my code and correct me?

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  return alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name<input type="text" id="myname"><br> Phone

  <input type="text" id="myphone"><br> Country <input type="text" id="mycontry"><br> Mail

  <input type="text" id="mymail"><br>



  <button onclick="myFunction()">Try it</button>

</div>

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  return alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name<input type="text" id="myname"><br> Phone

  <input type="text" id="myphone"><br> Country <input type="text" id="mycontry"><br> Mail

  <input type="text" id="mymail"><br>



  <button onclick="myFunction()">Try it</button>

</div>

javascript

edited Nov 9 at 7:53

barbsan

2,1481022

asked Nov 8 at 9:10

user10493493

edited Nov 9 at 7:53

barbsan

2,1481022

asked Nov 8 at 9:10

user10493493

edited Nov 9 at 7:53

barbsan

2,1481022

edited Nov 9 at 7:53

barbsan

2,1481022

edited Nov 9 at 7:53

barbsan

2,1481022

asked Nov 8 at 9:10

user10493493

asked Nov 8 at 9:10

user10493493

asked Nov 8 at 9:10

user10493493

alert is a browser's way to notify user of something. It does not return anything
– Rajesh
Nov 8 at 9:14

Please explain more of what you are trying to do, and perhaps more of your code and we might be able to help. As a guess, try to return alert(name + " , " + phone + " , " + country + " , " + mail);, then you could run alert(myFunction());
– Tim Rooke
Nov 8 at 9:29

alert() does not return anything. I guess you could say that it returns undefined
– marvinIsSacul
Nov 8 at 9:35

Firstly thanks a lot.
– user10493493
Nov 9 at 5:28

Actually I have to read user registrations details and show them in alert box.
– user10493493
Nov 9 at 6:14

|
show 2 more comments

alert is a browser's way to notify user of something. It does not return anything
– Rajesh
Nov 8 at 9:14

Please explain more of what you are trying to do, and perhaps more of your code and we might be able to help. As a guess, try to return alert(name + " , " + phone + " , " + country + " , " + mail);, then you could run alert(myFunction());
– Tim Rooke
Nov 8 at 9:29

alert() does not return anything. I guess you could say that it returns undefined
– marvinIsSacul
Nov 8 at 9:35

Firstly thanks a lot.
– user10493493
Nov 9 at 5:28

Actually I have to read user registrations details and show them in alert box.
– user10493493
Nov 9 at 6:14

alert is a browser's way to notify user of something. It does not return anything
– Rajesh
Nov 8 at 9:14

Please explain more of what you are trying to do, and perhaps more of your code and we might be able to help. As a guess, try to return alert(name + " , " + phone + " , " + country + " , " + mail);, then you could run alert(myFunction());
– Tim Rooke
Nov 8 at 9:29

alert() does not return anything. I guess you could say that it returns undefined
– marvinIsSacul
Nov 8 at 9:35

Firstly thanks a lot.
– user10493493
Nov 9 at 5:28

Actually I have to read user registrations details and show them in alert box.
– user10493493
Nov 9 at 6:14

|
show 2 more comments

3 Answers
3

active

oldest

votes

up vote
0
down vote

accepted

Here is your working code. You were selecting the wrong id:

change <input type="text" id="mycontry" /> to id="mycountry"

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  

  //var phone = document.getElementById('myphone').value;

  //var country = document.getElementById('mycountry').value;

  //var mail = document.getElementById('mymail').value;

  return alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name <input type="text" id="myname" ><br>

  Phone <input type="text" id="myphone" ><br> 

  Country <input type="text" id="mycountry"><br> 

  Mail <input type="text" id="mymail" value=""><br>



  <button onclick="myFunction()">Try it</button>

</div>

answered Nov 9 at 8:15

Nelson Owalo

1,015925

add a comment |

up vote
0
down vote

If you want to use, you can use return with alert() function. But, you cannot get any field's value from alert(). If you want to get fields value from myFunction(). You have to create objects.
e.g.

//create constructor



function myFunction(myname, myphone, mycountry, mymail) {

    this.name = myname;

    this.phone = myphone;

    this.country = mycountry;

    this.mail = mymail;

}



//create object



var obj = new myFunction("testName", "testPhone", "testCountry", "testMail");



window.onload = alert(obj.name + " , " + obj.phone + " , " + obj.country + " , " + obj.mail);

About JavaScript - object's functions referencing its fields

edited Nov 8 at 10:13

answered Nov 8 at 10:02

Alice

6771820

It is not working. Actually I have to do this :-Read user registration details and show them in an alert box.
– user10493493
Nov 9 at 7:12

add a comment |

up vote
0
down vote

You don't have to return anything since you're not using return value anywhere. You can just alert:

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name

  <input type="text" id="myname"><br> 

  Phone

  <input type="text" id="myphone"><br> 

  Country 

  <input type="text" id="mycountry"><br> 

  Mail

  <input type="text" id="mymail"><br>



  <button onclick="myFunction()">Try it</button>

</div>

Notice that your actual problem was with country field: (your current code throws an error sating cannot read property value of null since the selected id is wrong)

  <input type="text" id="mycountry">

  <!-- was missing u in here ^^ -->

answered Nov 9 at 8:18

Bhojendra Rauniyar

50.1k1978121

add a comment |

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3 Answers
3

active

oldest

votes

3 Answers
3

active

oldest

votes

up vote
0
down vote

accepted

Here is your working code. You were selecting the wrong id:

change <input type="text" id="mycontry" /> to id="mycountry"

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  

  //var phone = document.getElementById('myphone').value;

  //var country = document.getElementById('mycountry').value;

  //var mail = document.getElementById('mymail').value;

  return alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name <input type="text" id="myname" ><br>

  Phone <input type="text" id="myphone" ><br> 

  Country <input type="text" id="mycountry"><br> 

  Mail <input type="text" id="mymail" value=""><br>



  <button onclick="myFunction()">Try it</button>

</div>

answered Nov 9 at 8:15

Nelson Owalo

1,015925

add a comment |

up vote
0
down vote

accepted

Here is your working code. You were selecting the wrong id:

change <input type="text" id="mycontry" /> to id="mycountry"

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  

  //var phone = document.getElementById('myphone').value;

  //var country = document.getElementById('mycountry').value;

  //var mail = document.getElementById('mymail').value;

  return alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name <input type="text" id="myname" ><br>

  Phone <input type="text" id="myphone" ><br> 

  Country <input type="text" id="mycountry"><br> 

  Mail <input type="text" id="mymail" value=""><br>



  <button onclick="myFunction()">Try it</button>

</div>

answered Nov 9 at 8:15

Nelson Owalo

1,015925

add a comment |

up vote
0
down vote

accepted

Here is your working code. You were selecting the wrong id:

change <input type="text" id="mycontry" /> to id="mycountry"

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  

  //var phone = document.getElementById('myphone').value;

  //var country = document.getElementById('mycountry').value;

  //var mail = document.getElementById('mymail').value;

  return alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name <input type="text" id="myname" ><br>

  Phone <input type="text" id="myphone" ><br> 

  Country <input type="text" id="mycountry"><br> 

  Mail <input type="text" id="mymail" value=""><br>



  <button onclick="myFunction()">Try it</button>

</div>

answered Nov 9 at 8:15

Nelson Owalo

1,015925

Here is your working code. You were selecting the wrong id:

change <input type="text" id="mycontry" /> to id="mycountry"

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  

  //var phone = document.getElementById('myphone').value;

  //var country = document.getElementById('mycountry').value;

  //var mail = document.getElementById('mymail').value;

  return alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name <input type="text" id="myname" ><br>

  Phone <input type="text" id="myphone" ><br> 

  Country <input type="text" id="mycountry"><br> 

  Mail <input type="text" id="mymail" value=""><br>



  <button onclick="myFunction()">Try it</button>

</div>

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  

  //var phone = document.getElementById('myphone').value;

  //var country = document.getElementById('mycountry').value;

  //var mail = document.getElementById('mymail').value;

  return alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name <input type="text" id="myname" ><br>

  Phone <input type="text" id="myphone" ><br> 

  Country <input type="text" id="mycountry"><br> 

  Mail <input type="text" id="mymail" value=""><br>



  <button onclick="myFunction()">Try it</button>

</div>

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  

  //var phone = document.getElementById('myphone').value;

  //var country = document.getElementById('mycountry').value;

  //var mail = document.getElementById('mymail').value;

  return alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name <input type="text" id="myname" ><br>

  Phone <input type="text" id="myphone" ><br> 

  Country <input type="text" id="mycountry"><br> 

  Mail <input type="text" id="mymail" value=""><br>



  <button onclick="myFunction()">Try it</button>

</div>

answered Nov 9 at 8:15

Nelson Owalo

1,015925

answered Nov 9 at 8:15

Nelson Owalo

1,015925

answered Nov 9 at 8:15

Nelson Owalo

1,015925

answered Nov 9 at 8:15

Nelson Owalo

1,015925

add a comment |

up vote
0
down vote

//create constructor



function myFunction(myname, myphone, mycountry, mymail) {

    this.name = myname;

    this.phone = myphone;

    this.country = mycountry;

    this.mail = mymail;

}



//create object



var obj = new myFunction("testName", "testPhone", "testCountry", "testMail");



window.onload = alert(obj.name + " , " + obj.phone + " , " + obj.country + " , " + obj.mail);

About JavaScript - object's functions referencing its fields

edited Nov 8 at 10:13

answered Nov 8 at 10:02

Alice

6771820

It is not working. Actually I have to do this :-Read user registration details and show them in an alert box.
– user10493493
Nov 9 at 7:12

add a comment |

up vote
0
down vote

//create constructor



function myFunction(myname, myphone, mycountry, mymail) {

    this.name = myname;

    this.phone = myphone;

    this.country = mycountry;

    this.mail = mymail;

}



//create object



var obj = new myFunction("testName", "testPhone", "testCountry", "testMail");



window.onload = alert(obj.name + " , " + obj.phone + " , " + obj.country + " , " + obj.mail);

About JavaScript - object's functions referencing its fields

edited Nov 8 at 10:13

answered Nov 8 at 10:02

Alice

6771820

It is not working. Actually I have to do this :-Read user registration details and show them in an alert box.
– user10493493
Nov 9 at 7:12

add a comment |

up vote
0
down vote

//create constructor



function myFunction(myname, myphone, mycountry, mymail) {

    this.name = myname;

    this.phone = myphone;

    this.country = mycountry;

    this.mail = mymail;

}



//create object



var obj = new myFunction("testName", "testPhone", "testCountry", "testMail");



window.onload = alert(obj.name + " , " + obj.phone + " , " + obj.country + " , " + obj.mail);

About JavaScript - object's functions referencing its fields

edited Nov 8 at 10:13

answered Nov 8 at 10:02

Alice

6771820

//create constructor



function myFunction(myname, myphone, mycountry, mymail) {

    this.name = myname;

    this.phone = myphone;

    this.country = mycountry;

    this.mail = mymail;

}



//create object



var obj = new myFunction("testName", "testPhone", "testCountry", "testMail");



window.onload = alert(obj.name + " , " + obj.phone + " , " + obj.country + " , " + obj.mail);

About JavaScript - object's functions referencing its fields

edited Nov 8 at 10:13

answered Nov 8 at 10:02

Alice

6771820

edited Nov 8 at 10:13

answered Nov 8 at 10:02

Alice

6771820

answered Nov 8 at 10:02

Alice

6771820

answered Nov 8 at 10:02

Alice

6771820

It is not working. Actually I have to do this :-Read user registration details and show them in an alert box.
– user10493493
Nov 9 at 7:12

add a comment |

It is not working. Actually I have to do this :-Read user registration details and show them in an alert box.
– user10493493
Nov 9 at 7:12

It is not working. Actually I have to do this :-Read user registration details and show them in an alert box.
– user10493493
Nov 9 at 7:12

add a comment |

up vote
0
down vote

You don't have to return anything since you're not using return value anywhere. You can just alert:

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name

  <input type="text" id="myname"><br> 

  Phone

  <input type="text" id="myphone"><br> 

  Country 

  <input type="text" id="mycountry"><br> 

  Mail

  <input type="text" id="mymail"><br>



  <button onclick="myFunction()">Try it</button>

</div>

Notice that your actual problem was with country field: (your current code throws an error sating cannot read property value of null since the selected id is wrong)

  <input type="text" id="mycountry">

  <!-- was missing u in here ^^ -->

answered Nov 9 at 8:18

Bhojendra Rauniyar

50.1k1978121

add a comment |

up vote
0
down vote

You don't have to return anything since you're not using return value anywhere. You can just alert:

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name

  <input type="text" id="myname"><br> 

  Phone

  <input type="text" id="myphone"><br> 

  Country 

  <input type="text" id="mycountry"><br> 

  Mail

  <input type="text" id="mymail"><br>



  <button onclick="myFunction()">Try it</button>

</div>

Notice that your actual problem was with country field: (your current code throws an error sating cannot read property value of null since the selected id is wrong)

  <input type="text" id="mycountry">

  <!-- was missing u in here ^^ -->

answered Nov 9 at 8:18

Bhojendra Rauniyar

50.1k1978121

add a comment |

up vote
0
down vote

You don't have to return anything since you're not using return value anywhere. You can just alert:

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name

  <input type="text" id="myname"><br> 

  Phone

  <input type="text" id="myphone"><br> 

  Country 

  <input type="text" id="mycountry"><br> 

  Mail

  <input type="text" id="mymail"><br>



  <button onclick="myFunction()">Try it</button>

</div>

Notice that your actual problem was with country field: (your current code throws an error sating cannot read property value of null since the selected id is wrong)

  <input type="text" id="mycountry">

  <!-- was missing u in here ^^ -->

answered Nov 9 at 8:18

Bhojendra Rauniyar

50.1k1978121

You don't have to return anything since you're not using return value anywhere. You can just alert:

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name

  <input type="text" id="myname"><br> 

  Phone

  <input type="text" id="myphone"><br> 

  Country 

  <input type="text" id="mycountry"><br> 

  Mail

  <input type="text" id="mymail"><br>



  <button onclick="myFunction()">Try it</button>

</div>

Notice that your actual problem was with country field: (your current code throws an error sating cannot read property value of null since the selected id is wrong)

  <input type="text" id="mycountry">

  <!-- was missing u in here ^^ -->

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name

  <input type="text" id="myname"><br> 

  Phone

  <input type="text" id="myphone"><br> 

  Country 

  <input type="text" id="mycountry"><br> 

  Mail

  <input type="text" id="mymail"><br>



  <button onclick="myFunction()">Try it</button>

</div>

function myFunction() {

  var name = document.getElementById('myname').value;

  var phone = document.getElementById('myphone').value;

  var country = document.getElementById('mycountry').value;

  var mail = document.getElementById('mymail').value;

  alert(name + " , " + phone + " , " + country + " , " + mail);

}

<div>

  Name

  <input type="text" id="myname"><br> 

  Phone

  <input type="text" id="myphone"><br> 

  Country 

  <input type="text" id="mycountry"><br> 

  Mail

  <input type="text" id="mymail"><br>



  <button onclick="myFunction()">Try it</button>

</div>

answered Nov 9 at 8:18

Bhojendra Rauniyar

50.1k1978121

answered Nov 9 at 8:18

Bhojendra Rauniyar

50.1k1978121

answered Nov 9 at 8:18

Bhojendra Rauniyar

50.1k1978121

answered Nov 9 at 8:18

Bhojendra Rauniyar

50.1k1978121

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