Parse a value and make it editable in javascript

I have a requirement to parse a value in a field but also make it editable so that user can add a value by himself as well which is not dependent on calculation. I am able to parse the value to the field but I am not able to make it editable so that user add a value by himself. Please help.

var Height = document.getElementsByName('[Height]')[0].value;

var vertical = Height / 30;

if (vertical > 1) {

  var x = parseInt(vertical);

  console.log(x);

  document.getElementsByName('vertical')[0].value = x;

} else {

  return false;

}

Update

<input type="number" id="message" name="vertical" oninput="calculate()">

edited Nov 20 '18 at 17:41

asked Nov 20 '18 at 17:30

Navroop

398

So which element are you trying to make editable? what is the HTML supporting this code?

– Snowmonkey
Nov 20 '18 at 17:31

share that code logic as well

– Jayanth
Nov 20 '18 at 17:32

How is the code supposed to know whether to divide the input by 30 or not?

– Barmar
Nov 20 '18 at 17:34

Why don't you use Input tag and give the user to add any value?

– Dananjaya Ariyasena
Nov 20 '18 at 17:37

Height is always divided by 30 to get the vertical variable. I have used the input tag on the vertical field but the requirement is it calculated based on height and if we need more vertical user can enter by himself.

– Navroop
Nov 20 '18 at 17:44

add a comment |

var Height = document.getElementsByName('[Height]')[0].value;

var vertical = Height / 30;

if (vertical > 1) {

  var x = parseInt(vertical);

  console.log(x);

  document.getElementsByName('vertical')[0].value = x;

} else {

  return false;

}

Update

<input type="number" id="message" name="vertical" oninput="calculate()">

edited Nov 20 '18 at 17:41

asked Nov 20 '18 at 17:30

Navroop

398

So which element are you trying to make editable? what is the HTML supporting this code?

– Snowmonkey
Nov 20 '18 at 17:31

share that code logic as well

– Jayanth
Nov 20 '18 at 17:32

How is the code supposed to know whether to divide the input by 30 or not?

– Barmar
Nov 20 '18 at 17:34

Why don't you use Input tag and give the user to add any value?

– Dananjaya Ariyasena
Nov 20 '18 at 17:37

Height is always divided by 30 to get the vertical variable. I have used the input tag on the vertical field but the requirement is it calculated based on height and if we need more vertical user can enter by himself.

– Navroop
Nov 20 '18 at 17:44

add a comment |

var Height = document.getElementsByName('[Height]')[0].value;

var vertical = Height / 30;

if (vertical > 1) {

  var x = parseInt(vertical);

  console.log(x);

  document.getElementsByName('vertical')[0].value = x;

} else {

  return false;

}

Update

<input type="number" id="message" name="vertical" oninput="calculate()">

edited Nov 20 '18 at 17:41

asked Nov 20 '18 at 17:30

Navroop

398

var Height = document.getElementsByName('[Height]')[0].value;

var vertical = Height / 30;

if (vertical > 1) {

  var x = parseInt(vertical);

  console.log(x);

  document.getElementsByName('vertical')[0].value = x;

} else {

  return false;

}

Update

<input type="number" id="message" name="vertical" oninput="calculate()">

javascript

edited Nov 20 '18 at 17:41

asked Nov 20 '18 at 17:30

Navroop

398

edited Nov 20 '18 at 17:41

asked Nov 20 '18 at 17:30

Navroop

398

edited Nov 20 '18 at 17:41

asked Nov 20 '18 at 17:30

Navroop

398

asked Nov 20 '18 at 17:30

Navroop

398

asked Nov 20 '18 at 17:30

Navroop

398

So which element are you trying to make editable? what is the HTML supporting this code?

– Snowmonkey
Nov 20 '18 at 17:31

share that code logic as well

– Jayanth
Nov 20 '18 at 17:32

How is the code supposed to know whether to divide the input by 30 or not?

– Barmar
Nov 20 '18 at 17:34

Why don't you use Input tag and give the user to add any value?

– Dananjaya Ariyasena
Nov 20 '18 at 17:37

Height is always divided by 30 to get the vertical variable. I have used the input tag on the vertical field but the requirement is it calculated based on height and if we need more vertical user can enter by himself.

– Navroop
Nov 20 '18 at 17:44

add a comment |

So which element are you trying to make editable? what is the HTML supporting this code?

– Snowmonkey
Nov 20 '18 at 17:31

share that code logic as well

– Jayanth
Nov 20 '18 at 17:32

How is the code supposed to know whether to divide the input by 30 or not?

– Barmar
Nov 20 '18 at 17:34

Why don't you use Input tag and give the user to add any value?

– Dananjaya Ariyasena
Nov 20 '18 at 17:37

Height is always divided by 30 to get the vertical variable. I have used the input tag on the vertical field but the requirement is it calculated based on height and if we need more vertical user can enter by himself.

– Navroop
Nov 20 '18 at 17:44

So which element are you trying to make editable? what is the HTML supporting this code?

– Snowmonkey
Nov 20 '18 at 17:31

share that code logic as well

– Jayanth
Nov 20 '18 at 17:32

How is the code supposed to know whether to divide the input by 30 or not?

– Barmar
Nov 20 '18 at 17:34

Why don't you use Input tag and give the user to add any value?

– Dananjaya Ariyasena
Nov 20 '18 at 17:37

Height is always divided by 30 to get the vertical variable. I have used the input tag on the vertical field but the requirement is it calculated based on height and if we need more vertical user can enter by himself.

– Navroop
Nov 20 '18 at 17:44

add a comment |

1 Answer
1

active

oldest

votes

var heightInput = document.getElementById('height'),

  verticalOutput = document.getElementById('vertical');



function calculate() {

  var vertical = parseInt(heightInput.value,10) / 30;

  verticalOutput.value = vertical > 1 ? Math.floor(vertical) : "—";

}

<div>Type in a value greater than 30</div>

<input type="number" id="height" oninput="calculate()">

=>

<input id="vertical" type="number" value="—">

In this solution, you have an input and output element. On every “oninput” the function will set the output field with the calculated value.

edited Nov 20 '18 at 18:03

answered Nov 20 '18 at 17:55

Matthi

592212

code snippet not working

– Navroop
Nov 20 '18 at 17:58

Then what exactly?

– Matthi
Nov 20 '18 at 17:59

nothing happens

– Navroop
Nov 20 '18 at 18:03

Type a number greater than 30 (otherwise nothing happens). This is how you presented your code. If not, what should happen?

– Matthi
Nov 20 '18 at 18:04

So please type 90. The output value will be 3. Then you can click into the output field and write something totally different. Exactly what you described, isn’t it?

– Matthi
Nov 20 '18 at 18:14

|
show 1 more comment

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1 Answer
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active

oldest

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1 Answer
1

active

oldest

votes

var heightInput = document.getElementById('height'),

  verticalOutput = document.getElementById('vertical');



function calculate() {

  var vertical = parseInt(heightInput.value,10) / 30;

  verticalOutput.value = vertical > 1 ? Math.floor(vertical) : "—";

}

<div>Type in a value greater than 30</div>

<input type="number" id="height" oninput="calculate()">

=>

<input id="vertical" type="number" value="—">

In this solution, you have an input and output element. On every “oninput” the function will set the output field with the calculated value.

edited Nov 20 '18 at 18:03

answered Nov 20 '18 at 17:55

Matthi

592212

code snippet not working

– Navroop
Nov 20 '18 at 17:58

Then what exactly?

– Matthi
Nov 20 '18 at 17:59

nothing happens

– Navroop
Nov 20 '18 at 18:03

Type a number greater than 30 (otherwise nothing happens). This is how you presented your code. If not, what should happen?

– Matthi
Nov 20 '18 at 18:04

So please type 90. The output value will be 3. Then you can click into the output field and write something totally different. Exactly what you described, isn’t it?

– Matthi
Nov 20 '18 at 18:14

|
show 1 more comment

var heightInput = document.getElementById('height'),

  verticalOutput = document.getElementById('vertical');



function calculate() {

  var vertical = parseInt(heightInput.value,10) / 30;

  verticalOutput.value = vertical > 1 ? Math.floor(vertical) : "—";

}

<div>Type in a value greater than 30</div>

<input type="number" id="height" oninput="calculate()">

=>

<input id="vertical" type="number" value="—">

In this solution, you have an input and output element. On every “oninput” the function will set the output field with the calculated value.

edited Nov 20 '18 at 18:03

answered Nov 20 '18 at 17:55

Matthi

592212

code snippet not working

– Navroop
Nov 20 '18 at 17:58

Then what exactly?

– Matthi
Nov 20 '18 at 17:59

nothing happens

– Navroop
Nov 20 '18 at 18:03

Type a number greater than 30 (otherwise nothing happens). This is how you presented your code. If not, what should happen?

– Matthi
Nov 20 '18 at 18:04

So please type 90. The output value will be 3. Then you can click into the output field and write something totally different. Exactly what you described, isn’t it?

– Matthi
Nov 20 '18 at 18:14

|
show 1 more comment

var heightInput = document.getElementById('height'),

  verticalOutput = document.getElementById('vertical');



function calculate() {

  var vertical = parseInt(heightInput.value,10) / 30;

  verticalOutput.value = vertical > 1 ? Math.floor(vertical) : "—";

}

<div>Type in a value greater than 30</div>

<input type="number" id="height" oninput="calculate()">

=>

<input id="vertical" type="number" value="—">

In this solution, you have an input and output element. On every “oninput” the function will set the output field with the calculated value.

edited Nov 20 '18 at 18:03

answered Nov 20 '18 at 17:55

Matthi

592212

var heightInput = document.getElementById('height'),

  verticalOutput = document.getElementById('vertical');



function calculate() {

  var vertical = parseInt(heightInput.value,10) / 30;

  verticalOutput.value = vertical > 1 ? Math.floor(vertical) : "—";

}

<div>Type in a value greater than 30</div>

<input type="number" id="height" oninput="calculate()">

=>

<input id="vertical" type="number" value="—">

In this solution, you have an input and output element. On every “oninput” the function will set the output field with the calculated value.

var heightInput = document.getElementById('height'),

  verticalOutput = document.getElementById('vertical');



function calculate() {

  var vertical = parseInt(heightInput.value,10) / 30;

  verticalOutput.value = vertical > 1 ? Math.floor(vertical) : "—";

}

<div>Type in a value greater than 30</div>

<input type="number" id="height" oninput="calculate()">

=>

<input id="vertical" type="number" value="—">

var heightInput = document.getElementById('height'),

  verticalOutput = document.getElementById('vertical');



function calculate() {

  var vertical = parseInt(heightInput.value,10) / 30;

  verticalOutput.value = vertical > 1 ? Math.floor(vertical) : "—";

}

<div>Type in a value greater than 30</div>

<input type="number" id="height" oninput="calculate()">

=>

<input id="vertical" type="number" value="—">

edited Nov 20 '18 at 18:03

answered Nov 20 '18 at 17:55

Matthi

592212

edited Nov 20 '18 at 18:03

answered Nov 20 '18 at 17:55

Matthi

592212

answered Nov 20 '18 at 17:55

Matthi

592212

answered Nov 20 '18 at 17:55

Matthi

592212

code snippet not working

– Navroop
Nov 20 '18 at 17:58

Then what exactly?

– Matthi
Nov 20 '18 at 17:59

nothing happens

– Navroop
Nov 20 '18 at 18:03

Type a number greater than 30 (otherwise nothing happens). This is how you presented your code. If not, what should happen?

– Matthi
Nov 20 '18 at 18:04

So please type 90. The output value will be 3. Then you can click into the output field and write something totally different. Exactly what you described, isn’t it?

– Matthi
Nov 20 '18 at 18:14

|
show 1 more comment

code snippet not working

– Navroop
Nov 20 '18 at 17:58

Then what exactly?

– Matthi
Nov 20 '18 at 17:59

nothing happens

– Navroop
Nov 20 '18 at 18:03

Type a number greater than 30 (otherwise nothing happens). This is how you presented your code. If not, what should happen?

– Matthi
Nov 20 '18 at 18:04

So please type 90. The output value will be 3. Then you can click into the output field and write something totally different. Exactly what you described, isn’t it?

– Matthi
Nov 20 '18 at 18:14

code snippet not working

– Navroop
Nov 20 '18 at 17:58

Then what exactly?

– Matthi
Nov 20 '18 at 17:59

nothing happens

– Navroop
Nov 20 '18 at 18:03

Type a number greater than 30 (otherwise nothing happens). This is how you presented your code. If not, what should happen?

– Matthi
Nov 20 '18 at 18:04

So please type 90. The output value will be 3. Then you can click into the output field and write something totally different. Exactly what you described, isn’t it?

– Matthi
Nov 20 '18 at 18:14

|
show 1 more comment

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