Prevent input when text fills visible length of input

-1

I have an html input that is absolutely positioned over a canvas element. The width is set to meet the right border of a canvas element in the background (highlighted).

enter image description here

The input is actually appended to the larger canvas element, based on where the user drops the green circle to the left of the input:

var input = jQuery('<div><input id="edit-annotation-input" ' + 'style="z-index: 100; position: absolute; top:' + (this.textPosition.y - 9) + 'px; left:'+ (this.textPosition.x + 8) +'px; width: ' + (610 - 7 - this.textPosition.x) + 'px; border: none; color: #0bac3a; outline: none; background-color: transparent !important; padding: 0px; font-family: arial; font-size: 12pt; " ' + 'spellcheck="false" type="text" name="mytext" value="'+string+'"/></div>'); jQuery("div #pad").append(input);

How can I prevent user input when the text fills the visible width of the input. The text should be stopped in the following example, when the user enters another key the input should be prevented:

enter image description here "dsadss"

I want to avoid the text cursor just moving along as more input is entered i.e like this which is the default behavior:

enter image description here
"dsadsssss"

I have previously considered using properties such as maxlength and the oninput event but could not come up with any combination that had this desired effect

edited Nov 26 '18 at 4:11

asked Nov 26 '18 at 3:55

morganwebdev

14510

1

is the width of the input dynamic? why didn't maxlength work for you? please include your markup

– billynoah
Nov 26 '18 at 3:58

@billynoah Yes it is dynamic. I have edited in (sorry for formatting I couldn't get it quite right yet)

– morganwebdev
Nov 26 '18 at 4:12

You should create snippet so we can see the problem in action.

– Just code
Nov 26 '18 at 4:15

add a comment |

-1

I have an html input that is absolutely positioned over a canvas element. The width is set to meet the right border of a canvas element in the background (highlighted).

enter image description here

The input is actually appended to the larger canvas element, based on where the user drops the green circle to the left of the input:

How can I prevent user input when the text fills the visible width of the input. The text should be stopped in the following example, when the user enters another key the input should be prevented:

enter image description here "dsadss"

I want to avoid the text cursor just moving along as more input is entered i.e like this which is the default behavior:

enter image description here
"dsadsssss"

I have previously considered using properties such as maxlength and the oninput event but could not come up with any combination that had this desired effect

edited Nov 26 '18 at 4:11

asked Nov 26 '18 at 3:55

morganwebdev

14510

1

is the width of the input dynamic? why didn't maxlength work for you? please include your markup

– billynoah
Nov 26 '18 at 3:58

@billynoah Yes it is dynamic. I have edited in (sorry for formatting I couldn't get it quite right yet)

– morganwebdev
Nov 26 '18 at 4:12

You should create snippet so we can see the problem in action.

– Just code
Nov 26 '18 at 4:15

add a comment |

-1

I have an html input that is absolutely positioned over a canvas element. The width is set to meet the right border of a canvas element in the background (highlighted).

enter image description here

The input is actually appended to the larger canvas element, based on where the user drops the green circle to the left of the input:

How can I prevent user input when the text fills the visible width of the input. The text should be stopped in the following example, when the user enters another key the input should be prevented:

enter image description here "dsadss"

I want to avoid the text cursor just moving along as more input is entered i.e like this which is the default behavior:

enter image description here
"dsadsssss"

I have previously considered using properties such as maxlength and the oninput event but could not come up with any combination that had this desired effect

edited Nov 26 '18 at 4:11

asked Nov 26 '18 at 3:55

morganwebdev

14510

I have an html input that is absolutely positioned over a canvas element. The width is set to meet the right border of a canvas element in the background (highlighted).

enter image description here

The input is actually appended to the larger canvas element, based on where the user drops the green circle to the left of the input:

How can I prevent user input when the text fills the visible width of the input. The text should be stopped in the following example, when the user enters another key the input should be prevented:

enter image description here "dsadss"

I want to avoid the text cursor just moving along as more input is entered i.e like this which is the default behavior:

enter image description here
"dsadsssss"

I have previously considered using properties such as maxlength and the oninput event but could not come up with any combination that had this desired effect

javascript jquery html css input

edited Nov 26 '18 at 4:11

asked Nov 26 '18 at 3:55

morganwebdev

14510

edited Nov 26 '18 at 4:11

asked Nov 26 '18 at 3:55

morganwebdev

14510

edited Nov 26 '18 at 4:11

asked Nov 26 '18 at 3:55

morganwebdev

14510

asked Nov 26 '18 at 3:55

morganwebdev

14510

asked Nov 26 '18 at 3:55

morganwebdev

14510

1

is the width of the input dynamic? why didn't maxlength work for you? please include your markup

– billynoah
Nov 26 '18 at 3:58

@billynoah Yes it is dynamic. I have edited in (sorry for formatting I couldn't get it quite right yet)

– morganwebdev
Nov 26 '18 at 4:12

You should create snippet so we can see the problem in action.

– Just code
Nov 26 '18 at 4:15

add a comment |

1

is the width of the input dynamic? why didn't maxlength work for you? please include your markup

– billynoah
Nov 26 '18 at 3:58

@billynoah Yes it is dynamic. I have edited in (sorry for formatting I couldn't get it quite right yet)

– morganwebdev
Nov 26 '18 at 4:12

You should create snippet so we can see the problem in action.

– Just code
Nov 26 '18 at 4:15

is the width of the input dynamic? why didn't maxlength work for you? please include your markup

– billynoah
Nov 26 '18 at 3:58

@billynoah Yes it is dynamic. I have edited in (sorry for formatting I couldn't get it quite right yet)

– morganwebdev
Nov 26 '18 at 4:12

You should create snippet so we can see the problem in action.

– Just code
Nov 26 '18 at 4:15

add a comment |

1 Answer
1

active

oldest

votes

This is a example hope it will help you or you can refer to it to help your problem.

$("input[name=testInput]").on('keydown keyup',function(event){ 

   var $that = $(this);

   var widthOfInput = getWidthOfInput(document.getElementById("testInput")) ;

   var cssWidth = $that.width();

   //console.log('widthOfInput'+ widthOfInput);

   //console.log('widthInputCss'+ widthInputCss);

   

   // accept key backspace

   var key = event.keyCode || event.charCode; 

   if( key == 8 || key == 46 ){

        return true;

   } 

   

   // check limit input

   if(cssWidth < widthOfInput){

      event.preventDefault();

   }

       

});





function getWidthOfInput(inputEl) {

  var tmp = document.createElement("span");

  tmp.className = "input-element tmp-element";

  tmp.innerHTML = inputEl.value.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');

  document.body.appendChild(tmp);

  var theWidth = tmp.getBoundingClientRect().width;

  document.body.removeChild(tmp);

  return theWidth;

}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<input type="text" id="testInput" name="testInput" style="width:100px"  />

answered Nov 26 '18 at 4:35

son pham

27816

A slightly modified form of this answer got the job done. The only thing I had to do was make the font size and family of the temporary element the same as the one I was trying to measure the text inside the input of to make the comparison work.

– morganwebdev
Nov 27 '18 at 15:23

add a comment |

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1 Answer
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1 Answer
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This is a example hope it will help you or you can refer to it to help your problem.

$("input[name=testInput]").on('keydown keyup',function(event){ 

   var $that = $(this);

   var widthOfInput = getWidthOfInput(document.getElementById("testInput")) ;

   var cssWidth = $that.width();

   //console.log('widthOfInput'+ widthOfInput);

   //console.log('widthInputCss'+ widthInputCss);

   

   // accept key backspace

   var key = event.keyCode || event.charCode; 

   if( key == 8 || key == 46 ){

        return true;

   } 

   

   // check limit input

   if(cssWidth < widthOfInput){

      event.preventDefault();

   }

       

});





function getWidthOfInput(inputEl) {

  var tmp = document.createElement("span");

  tmp.className = "input-element tmp-element";

  tmp.innerHTML = inputEl.value.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');

  document.body.appendChild(tmp);

  var theWidth = tmp.getBoundingClientRect().width;

  document.body.removeChild(tmp);

  return theWidth;

}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<input type="text" id="testInput" name="testInput" style="width:100px"  />

answered Nov 26 '18 at 4:35

son pham

27816

A slightly modified form of this answer got the job done. The only thing I had to do was make the font size and family of the temporary element the same as the one I was trying to measure the text inside the input of to make the comparison work.

– morganwebdev
Nov 27 '18 at 15:23

add a comment |

This is a example hope it will help you or you can refer to it to help your problem.

$("input[name=testInput]").on('keydown keyup',function(event){ 

   var $that = $(this);

   var widthOfInput = getWidthOfInput(document.getElementById("testInput")) ;

   var cssWidth = $that.width();

   //console.log('widthOfInput'+ widthOfInput);

   //console.log('widthInputCss'+ widthInputCss);

   

   // accept key backspace

   var key = event.keyCode || event.charCode; 

   if( key == 8 || key == 46 ){

        return true;

   } 

   

   // check limit input

   if(cssWidth < widthOfInput){

      event.preventDefault();

   }

       

});





function getWidthOfInput(inputEl) {

  var tmp = document.createElement("span");

  tmp.className = "input-element tmp-element";

  tmp.innerHTML = inputEl.value.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');

  document.body.appendChild(tmp);

  var theWidth = tmp.getBoundingClientRect().width;

  document.body.removeChild(tmp);

  return theWidth;

}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<input type="text" id="testInput" name="testInput" style="width:100px"  />

answered Nov 26 '18 at 4:35

son pham

27816

A slightly modified form of this answer got the job done. The only thing I had to do was make the font size and family of the temporary element the same as the one I was trying to measure the text inside the input of to make the comparison work.

– morganwebdev
Nov 27 '18 at 15:23

add a comment |

This is a example hope it will help you or you can refer to it to help your problem.

$("input[name=testInput]").on('keydown keyup',function(event){ 

   var $that = $(this);

   var widthOfInput = getWidthOfInput(document.getElementById("testInput")) ;

   var cssWidth = $that.width();

   //console.log('widthOfInput'+ widthOfInput);

   //console.log('widthInputCss'+ widthInputCss);

   

   // accept key backspace

   var key = event.keyCode || event.charCode; 

   if( key == 8 || key == 46 ){

        return true;

   } 

   

   // check limit input

   if(cssWidth < widthOfInput){

      event.preventDefault();

   }

       

});





function getWidthOfInput(inputEl) {

  var tmp = document.createElement("span");

  tmp.className = "input-element tmp-element";

  tmp.innerHTML = inputEl.value.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');

  document.body.appendChild(tmp);

  var theWidth = tmp.getBoundingClientRect().width;

  document.body.removeChild(tmp);

  return theWidth;

}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<input type="text" id="testInput" name="testInput" style="width:100px"  />

answered Nov 26 '18 at 4:35

son pham

27816

This is a example hope it will help you or you can refer to it to help your problem.

$("input[name=testInput]").on('keydown keyup',function(event){ 

   var $that = $(this);

   var widthOfInput = getWidthOfInput(document.getElementById("testInput")) ;

   var cssWidth = $that.width();

   //console.log('widthOfInput'+ widthOfInput);

   //console.log('widthInputCss'+ widthInputCss);

   

   // accept key backspace

   var key = event.keyCode || event.charCode; 

   if( key == 8 || key == 46 ){

        return true;

   } 

   

   // check limit input

   if(cssWidth < widthOfInput){

      event.preventDefault();

   }

       

});





function getWidthOfInput(inputEl) {

  var tmp = document.createElement("span");

  tmp.className = "input-element tmp-element";

  tmp.innerHTML = inputEl.value.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');

  document.body.appendChild(tmp);

  var theWidth = tmp.getBoundingClientRect().width;

  document.body.removeChild(tmp);

  return theWidth;

}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<input type="text" id="testInput" name="testInput" style="width:100px"  />

$("input[name=testInput]").on('keydown keyup',function(event){ 

   var $that = $(this);

   var widthOfInput = getWidthOfInput(document.getElementById("testInput")) ;

   var cssWidth = $that.width();

   //console.log('widthOfInput'+ widthOfInput);

   //console.log('widthInputCss'+ widthInputCss);

   

   // accept key backspace

   var key = event.keyCode || event.charCode; 

   if( key == 8 || key == 46 ){

        return true;

   } 

   

   // check limit input

   if(cssWidth < widthOfInput){

      event.preventDefault();

   }

       

});





function getWidthOfInput(inputEl) {

  var tmp = document.createElement("span");

  tmp.className = "input-element tmp-element";

  tmp.innerHTML = inputEl.value.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');

  document.body.appendChild(tmp);

  var theWidth = tmp.getBoundingClientRect().width;

  document.body.removeChild(tmp);

  return theWidth;

}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<input type="text" id="testInput" name="testInput" style="width:100px"  />

$("input[name=testInput]").on('keydown keyup',function(event){ 

   var $that = $(this);

   var widthOfInput = getWidthOfInput(document.getElementById("testInput")) ;

   var cssWidth = $that.width();

   //console.log('widthOfInput'+ widthOfInput);

   //console.log('widthInputCss'+ widthInputCss);

   

   // accept key backspace

   var key = event.keyCode || event.charCode; 

   if( key == 8 || key == 46 ){

        return true;

   } 

   

   // check limit input

   if(cssWidth < widthOfInput){

      event.preventDefault();

   }

       

});





function getWidthOfInput(inputEl) {

  var tmp = document.createElement("span");

  tmp.className = "input-element tmp-element";

  tmp.innerHTML = inputEl.value.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');

  document.body.appendChild(tmp);

  var theWidth = tmp.getBoundingClientRect().width;

  document.body.removeChild(tmp);

  return theWidth;

}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<input type="text" id="testInput" name="testInput" style="width:100px"  />

answered Nov 26 '18 at 4:35

son pham

27816

answered Nov 26 '18 at 4:35

son pham

27816

answered Nov 26 '18 at 4:35

son pham

27816

answered Nov 26 '18 at 4:35

son pham

27816

A slightly modified form of this answer got the job done. The only thing I had to do was make the font size and family of the temporary element the same as the one I was trying to measure the text inside the input of to make the comparison work.

– morganwebdev
Nov 27 '18 at 15:23

add a comment |

A slightly modified form of this answer got the job done. The only thing I had to do was make the font size and family of the temporary element the same as the one I was trying to measure the text inside the input of to make the comparison work.

– morganwebdev
Nov 27 '18 at 15:23

A slightly modified form of this answer got the job done. The only thing I had to do was make the font size and family of the temporary element the same as the one I was trying to measure the text inside the input of to make the comparison work.

– morganwebdev
Nov 27 '18 at 15:23

add a comment |

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