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Groups > comp.lang.javascript > #38511 > unrolled thread

Canvas Unicode sign lister

Started byJonas Thörnvall <jonas.thornvall@gmail.com>
First post2020-07-16 05:22 -0700
Last post2020-07-19 14:17 -0700
Articles 11 on this page of 31 — 5 participants

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Contents

  Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-16 05:22 -0700
    Re: Canvas Unicode sign lister Julio Di Egidio <julio@diegidio.name> - 2020-07-16 05:57 -0700
    Re: Canvas Unicode sign lister JJ <jj4public@vfemail.net> - 2020-07-16 23:40 +0700
      Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-16 10:18 -0700
        Re: Canvas Unicode sign lister luserdroog <luser.droog@gmail.com> - 2020-07-16 15:46 -0700
          Re: Canvas Unicode sign lister Julio Di Egidio <julio@diegidio.name> - 2020-07-17 01:33 -0700
            Re: Canvas Unicode sign lister Julio Di Egidio <julio@diegidio.name> - 2020-07-17 01:45 -0700
              Re: Canvas Unicode sign lister luserdroog <luser.droog@gmail.com> - 2020-07-18 11:45 -0700
          Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 06:09 -0700
          Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 08:22 -0700
            Re: Canvas Unicode sign lister luserdroog <luser.droog@gmail.com> - 2020-07-18 11:53 -0700
              Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 12:32 -0700
              Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 12:52 -0700
              Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 13:14 -0700
                Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 16:07 -0700
                Re: Canvas Unicode sign lister Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-07-19 14:25 +0100
                  Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-19 07:30 -0700
                  Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-19 08:05 -0700
              Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 13:29 -0700
          Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 08:32 -0700
            Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 08:45 -0700
              Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 09:01 -0700
                Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 09:44 -0700
                  Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 10:03 -0700
              Re: Canvas Unicode sign lister JJ <jj4public@vfemail.net> - 2020-07-19 20:47 +0700
                Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-19 07:41 -0700
                Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-19 09:41 -0700
                  Re: Canvas Unicode sign lister luserdroog <luser.droog@gmail.com> - 2020-07-19 11:53 -0700
                    Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-19 12:00 -0700
                  Re: Canvas Unicode sign lister Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-07-19 20:58 +0100
                    Re: Canvas Unicode sign lister Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-19 14:17 -0700

Page 2 of 2 — ← Prev page 1 [2]

#38525

FromJonas Thörnvall <jonas.thornvall@gmail.com>
Date2020-07-18 08:45 -0700
Message-ID<67f2ad78-faef-4305-9c9c-1644f1ad44e8o@googlegroups.com>
In reply to#38524
Den lördag 18 juli 2020 kl. 17:32:54 UTC+2 skrev Jonas Thörnvall:
> Den fredag 17 juli 2020 kl. 00:46:22 UTC+2 skrev luserdroog:
> > On Thursday, July 16, 2020 at 12:18:23 PM UTC-5, Jonas Thörnvall wrote:
> > > Den torsdag 16 juli 2020 kl. 18:40:55 UTC+2 skrev JJ:
> > > > On Thu, 16 Jul 2020 05:22:13 -0700 (PDT), Jonas Thörnvall wrote:
> > > > > Do anyone have a script to list unicode signs in an interval?
> > > > > 
> > > > > JT
> > > > 
> > > > Signs? If you meant symbol/graphical characters, see:
> > > > 
> > > > https://en.wikipedia.org/wiki/Unicode_symbols
> > > 
> > > Well i found howto do it i just did wonder if anyone have something to readily do it in table form with a range.
> > > 
> > > ctm.fillText("\u{1D122}", 100, 250);
> > 
> > function codes(minCode, maxCode) {
> >   let a = [];
> >   for (var c = minCode; c <= maxCode; ++c) {
> >     a.push(String.fromCharCode(c));
> >   }
> >   return a;
> > }
> > 
> > codes(min, max).forEach( (x,i) => ctm.fillText( x, 100, 250 + 10*i ) );
> > 
> > ?
> 
> This sort of string is what i am trying to achieve.
> "\u{1D122}"

I just can't figure out howto escape the backslash
ustring='"\\u{'+hexString+'}"';

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#38526

FromJonas Thörnvall <jonas.thornvall@gmail.com>
Date2020-07-18 09:01 -0700
Message-ID<c7e40450-03cf-4c20-a2c8-e3259f88e381o@googlegroups.com>
In reply to#38525
Den lördag 18 juli 2020 kl. 17:46:04 UTC+2 skrev Jonas Thörnvall:
> Den lördag 18 juli 2020 kl. 17:32:54 UTC+2 skrev Jonas Thörnvall:
> > Den fredag 17 juli 2020 kl. 00:46:22 UTC+2 skrev luserdroog:
> > > On Thursday, July 16, 2020 at 12:18:23 PM UTC-5, Jonas Thörnvall wrote:
> > > > Den torsdag 16 juli 2020 kl. 18:40:55 UTC+2 skrev JJ:
> > > > > On Thu, 16 Jul 2020 05:22:13 -0700 (PDT), Jonas Thörnvall wrote:
> > > > > > Do anyone have a script to list unicode signs in an interval?
> > > > > > 
> > > > > > JT
> > > > > 
> > > > > Signs? If you meant symbol/graphical characters, see:
> > > > > 
> > > > > https://en.wikipedia.org/wiki/Unicode_symbols
> > > > 
> > > > Well i found howto do it i just did wonder if anyone have something to readily do it in table form with a range.
> > > > 
> > > > ctm.fillText("\u{1D122}", 100, 250);
> > > 
> > > function codes(minCode, maxCode) {
> > >   let a = [];
> > >   for (var c = minCode; c <= maxCode; ++c) {
> > >     a.push(String.fromCharCode(c));
> > >   }
> > >   return a;
> > > }
> > > 
> > > codes(min, max).forEach( (x,i) => ctm.fillText( x, 100, 250 + 10*i ) );
> > > 
> > > ?
> > 
> > This sort of string is what i am trying to achieve.
> > "\u{1D122}"
> 
> I just can't figure out howto escape the backslash
> ustring='"\\u{'+hexString+'}"';

The script is done just need to build the string.
<HTML>
<BODY BGCOLOR=YELLOW onload=unicode();>
<B><font size=5>UNICODE SYMBOLS</font>
 MIN - <input type="number" id="xmin" name="xmin" value=0 size="10">
 MAX<input type="number" id="xmax" name="xmax"  value=100 size="10"></B> 
 <input type="submit" value="Page+" onclick="plus()"> |  
 <input type="submit" value="Page-" onclick="minus()">
 <br>
<canvas id="myCanvas" width="1900" height="890"></canvas>
</BODY>
</HTML>

<script>
var c = document.getElementById("myCanvas");
var ctm = c.getContext("2d");
ctm.fillStyle = "#000000";
ctm.fillRect(0, 0, 1890, 880);

function plus(){
	document.getElementById('xmin').value=min+890;
	document.getElementById('xmax').value=max+890;
	unicode();
}

function minus(){
	if(min>0){
		document.getElementById('xmin').value=min-890;
		document.getElementById('xmax').value=max-890;
		unicode();
	}
}

function unicode(){
	var k=60;
	var l=60;
	min=document.getElementById('xmin').value;
	max=document.getElementById('xmax').value;
	min=parseInt(min);
	max=parseInt(max);
	let uniarr = [];
	for(var i=min;i<max; i++){ 
		hexString = i.toString(16);
		ustring='"'+'\\'+'u{'+hexString+'}"';
		uniarr.push(ustring);
	}
	ctm.font = "35px courier bold";
	ctm.fillStyle = 'white';
	var j=min;
	while (j<max){
		ctm.fillText( uniarr[j],k, l );
		k=k+40;
		j++;
		if(k>1800){k=40;l=l+40;};
	}
}
</script>

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#38527

FromJonas Thörnvall <jonas.thornvall@gmail.com>
Date2020-07-18 09:44 -0700
Message-ID<3faeeda8-c7a0-4853-83d3-964734253b22o@googlegroups.com>
In reply to#38526
Den lördag 18 juli 2020 kl. 18:01:33 UTC+2 skrev Jonas Thörnvall:
> Den lördag 18 juli 2020 kl. 17:46:04 UTC+2 skrev Jonas Thörnvall:
> > Den lördag 18 juli 2020 kl. 17:32:54 UTC+2 skrev Jonas Thörnvall:
> > > Den fredag 17 juli 2020 kl. 00:46:22 UTC+2 skrev luserdroog:
> > > > On Thursday, July 16, 2020 at 12:18:23 PM UTC-5, Jonas Thörnvall wrote:
> > > > > Den torsdag 16 juli 2020 kl. 18:40:55 UTC+2 skrev JJ:
> > > > > > On Thu, 16 Jul 2020 05:22:13 -0700 (PDT), Jonas Thörnvall wrote:
> > > > > > > Do anyone have a script to list unicode signs in an interval?
> > > > > > > 
> > > > > > > JT
> > > > > > 
> > > > > > Signs? If you meant symbol/graphical characters, see:
> > > > > > 
> > > > > > https://en.wikipedia.org/wiki/Unicode_symbols
> > > > > 
> > > > > Well i found howto do it i just did wonder if anyone have something to readily do it in table form with a range.
> > > > > 
> > > > > ctm.fillText("\u{1D122}", 100, 250);
> > > > 
> > > > function codes(minCode, maxCode) {
> > > >   let a = [];
> > > >   for (var c = minCode; c <= maxCode; ++c) {
> > > >     a.push(String.fromCharCode(c));
> > > >   }
> > > >   return a;
> > > > }
> > > > 
> > > > codes(min, max).forEach( (x,i) => ctm.fillText( x, 100, 250 + 10*i ) );
> > > > 
> > > > ?
> > > 
> > > This sort of string is what i am trying to achieve.
> > > "\u{1D122}"
> > 
> > I just can't figure out howto escape the backslash
> > ustring='"\\u{'+hexString+'}"';
> 
> The script is done just need to build the string.
> <HTML>
> <BODY BGCOLOR=YELLOW onload=unicode();>
> <B><font size=5>UNICODE SYMBOLS</font>
>  MIN - <input type="number" id="xmin" name="xmin" value=0 size="10">
>  MAX<input type="number" id="xmax" name="xmax"  value=100 size="10"></B> 
>  <input type="submit" value="Page+" onclick="plus()"> |  
>  <input type="submit" value="Page-" onclick="minus()">
>  <br>
> <canvas id="myCanvas" width="1900" height="890"></canvas>
> </BODY>
> </HTML>
> 
> <script>
> var c = document.getElementById("myCanvas");
> var ctm = c.getContext("2d");
> ctm.fillStyle = "#000000";
> ctm.fillRect(0, 0, 1890, 880);
> 
> function plus(){
> 	document.getElementById('xmin').value=min+890;
> 	document.getElementById('xmax').value=max+890;
> 	unicode();
> }
> 
> function minus(){
> 	if(min>0){
> 		document.getElementById('xmin').value=min-890;
> 		document.getElementById('xmax').value=max-890;
> 		unicode();
> 	}
> }
> 
> function unicode(){
> 	var k=60;
> 	var l=60;
> 	min=document.getElementById('xmin').value;
> 	max=document.getElementById('xmax').value;
> 	min=parseInt(min);
> 	max=parseInt(max);
> 	let uniarr = [];
> 	for(var i=min;i<max; i++){ 
> 		hexString = i.toString(16);
> 		ustring='"'+'\\'+'u{'+hexString+'}"';
> 		uniarr.push(ustring);
> 	}
> 	ctm.font = "35px courier bold";
> 	ctm.fillStyle = 'white';
> 	var j=min;
> 	while (j<max){
> 		ctm.fillText( uniarr[j],k, l );
> 		k=k+40;
> 		j++;
> 		if(k>1800){k=40;l=l+40;};
> 	}
> }
> </script>

When i alert ustring the correct string seem to be there?
If i just replaced uniarr[j] with the actual string it stores it would work?
What am i missing here.

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#38528

FromJonas Thörnvall <jonas.thornvall@gmail.com>
Date2020-07-18 10:03 -0700
Message-ID<3a4577ca-c9e0-4527-9412-32fd6559f816o@googlegroups.com>
In reply to#38527
Den lördag 18 juli 2020 kl. 18:44:08 UTC+2 skrev Jonas Thörnvall:
> Den lördag 18 juli 2020 kl. 18:01:33 UTC+2 skrev Jonas Thörnvall:
> > Den lördag 18 juli 2020 kl. 17:46:04 UTC+2 skrev Jonas Thörnvall:
> > > Den lördag 18 juli 2020 kl. 17:32:54 UTC+2 skrev Jonas Thörnvall:
> > > > Den fredag 17 juli 2020 kl. 00:46:22 UTC+2 skrev luserdroog:
> > > > > On Thursday, July 16, 2020 at 12:18:23 PM UTC-5, Jonas Thörnvall wrote:
> > > > > > Den torsdag 16 juli 2020 kl. 18:40:55 UTC+2 skrev JJ:
> > > > > > > On Thu, 16 Jul 2020 05:22:13 -0700 (PDT), Jonas Thörnvall wrote:
> > > > > > > > Do anyone have a script to list unicode signs in an interval?
> > > > > > > > 
> > > > > > > > JT
> > > > > > > 
> > > > > > > Signs? If you meant symbol/graphical characters, see:
> > > > > > > 
> > > > > > > https://en.wikipedia.org/wiki/Unicode_symbols
> > > > > > 
> > > > > > Well i found howto do it i just did wonder if anyone have something to readily do it in table form with a range.
> > > > > > 
> > > > > > ctm.fillText("\u{1D122}", 100, 250);
> > > > > 
> > > > > function codes(minCode, maxCode) {
> > > > >   let a = [];
> > > > >   for (var c = minCode; c <= maxCode; ++c) {
> > > > >     a.push(String.fromCharCode(c));
> > > > >   }
> > > > >   return a;
> > > > > }
> > > > > 
> > > > > codes(min, max).forEach( (x,i) => ctm.fillText( x, 100, 250 + 10*i ) );
> > > > > 
> > > > > ?
> > > > 
> > > > This sort of string is what i am trying to achieve.
> > > > "\u{1D122}"
> > > 
> > > I just can't figure out howto escape the backslash
> > > ustring='"\\u{'+hexString+'}"';
> > 
> > The script is done just need to build the string.
> > <HTML>
> > <BODY BGCOLOR=YELLOW onload=unicode();>
> > <B><font size=5>UNICODE SYMBOLS</font>
> >  MIN - <input type="number" id="xmin" name="xmin" value=0 size="10">
> >  MAX<input type="number" id="xmax" name="xmax"  value=100 size="10"></B> 
> >  <input type="submit" value="Page+" onclick="plus()"> |  
> >  <input type="submit" value="Page-" onclick="minus()">
> >  <br>
> > <canvas id="myCanvas" width="1900" height="890"></canvas>
> > </BODY>
> > </HTML>
> > 
> > <script>
> > var c = document.getElementById("myCanvas");
> > var ctm = c.getContext("2d");
> > ctm.fillStyle = "#000000";
> > ctm.fillRect(0, 0, 1890, 880);
> > 
> > function plus(){
> > 	document.getElementById('xmin').value=min+890;
> > 	document.getElementById('xmax').value=max+890;
> > 	unicode();
> > }
> > 
> > function minus(){
> > 	if(min>0){
> > 		document.getElementById('xmin').value=min-890;
> > 		document.getElementById('xmax').value=max-890;
> > 		unicode();
> > 	}
> > }
> > 
> > function unicode(){
> > 	var k=60;
> > 	var l=60;
> > 	min=document.getElementById('xmin').value;
> > 	max=document.getElementById('xmax').value;
> > 	min=parseInt(min);
> > 	max=parseInt(max);
> > 	let uniarr = [];
> > 	for(var i=min;i<max; i++){ 
> > 		hexString = i.toString(16);
> > 		ustring='"'+'\\'+'u{'+hexString+'}"';
> > 		uniarr.push(ustring);
> > 	}
> > 	ctm.font = "35px courier bold";
> > 	ctm.fillStyle = 'white';
> > 	var j=min;
> > 	while (j<max){
> > 		ctm.fillText( uniarr[j],k, l );
> > 		k=k+40;
> > 		j++;
> > 		if(k>1800){k=40;l=l+40;};
> > 	}
> > }
> > </script>
> 
> When i alert ustring the correct string seem to be there?
> If i just replaced uniarr[j] with the actual string it stores it would work?
> What am i missing here.

Fast check anyone?
<HTML>
<canvas id="myCanvas" width="1900" height="890"></canvas>
<BODY BGCOLOR=YELLOW>
<B><font size=5>UNICODE SYMBOLS</font>
 MIN - <input type="number" id="xmin" name="xmin" value=0 size="10">
 MAX<input type="number" id="xmax" name="xmax"  value=889 size="10"></B> 
 <input type="submit" value="Page+" onclick="plus()"> |  
 <input type="submit" value="Page-" onclick="minus()">
 <br>
 </BODY>
</HTML>

<script>
var c = document.getElementById("myCanvas");
var ctm = c.getContext("2d");
ctm.fillStyle = "#000000";
ctm.fillRect(0, 0, 1890, 880);

function plus(){
	document.getElementById('xmin').value=min+890;
	document.getElementById('xmax').value=max+890;
	unicode();
}

function minus(){
	if(min>0){
		document.getElementById('xmin').value=min-890;
		document.getElementById('xmax').value=max-890;
		unicode();
	}
}

function unicode(){
	var k=60;
	var l=60;
	min=document.getElementById('xmin').value;
	max=document.getElementById('xmax').value;
	min=parseInt(min);
	max=parseInt(max);
	let uniarr = [];
	for(var i=min;i<max; i++){ 
		hexString = i.toString(16);
		ustring='"'+'\\'+'u{'+hexString+'}"';
		uniarr.push(ustring);
	}
	ctm.font = "35px courier bold";
	ctm.fillStyle = 'white';
	var j=min;
	while (j<max){
		//ctm.fillText( "\u{45}",k, l );
		ctm.fillText(uniarr[j],k, l );
		//alert(uniarr[j]);
		k=k+40;
		j++;
		if(k>1800){k=40;l=l+40;};
	}
}

unicode();
</script>

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#38542

FromJJ <jj4public@vfemail.net>
Date2020-07-19 20:47 +0700
Message-ID<40irtjzhnqkw$.qzm3alh1hfc7$.dlg@40tude.net>
In reply to#38525
On Sat, 18 Jul 2020 08:45:58 -0700 (PDT), Jonas Thörnvall wrote:
> 
> I just can't figure out howto escape the backslash
> ustring='"\\u{'+hexString+'}"';

It's not possible to dynamically create a `\u` or `\x` escaped character
where the character code is from separate source. Unless `eval()` or similar
method is used.

Use `String.fromCodePoint()` instead.

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#38544

FromJonas Thörnvall <jonas.thornvall@gmail.com>
Date2020-07-19 07:41 -0700
Message-ID<3d843ce0-e45b-4e66-ae73-86fb19219889o@googlegroups.com>
In reply to#38542
Den söndag 19 juli 2020 kl. 15:47:14 UTC+2 skrev JJ:
> On Sat, 18 Jul 2020 08:45:58 -0700 (PDT), Jonas Thörnvall wrote:
> > 
> > I just can't figure out howto escape the backslash
> > ustring='"\\u{'+hexString+'}"';
> 
> It's not possible to dynamically create a `\u` or `\x` escaped character
> where the character code is from separate source. Unless `eval()` or similar
> method is used.
> 
> Use `String.fromCodePoint()` instead.

Hello JJ, if you search "UTF-16 music symbols" for example you get this.
"UTF music symbols"
Unicode Character “𝅘𝅥𝅯” (U+1D161)
Name:	Musical Symbol Sixteenth Note
HTML Entity:	&#119137; &#x1D161;
UTF-8 Encoding:	0xF0 0x9D 0x85 0xA1
UTF-16 Encoding:	0xD834 0xDD61
UTF-32 Encoding:	0x0001D161

I really do not care about where the fromCharCode is store but it sure ain't stored at the place of making above decimal.

I can use charcode no problem but where are they stored????
I scrolled quite a bit.

Or better show me the line of code using stringFromCodePoint that generate Sixteenth Note and i am on my way to much more interesting tasks.

"Like generate realtime notation when playing, "well you have to release key for me to know placement and length relative tempo and then i can write out the note in realtime"

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#38549

FromJonas Thörnvall <jonas.thornvall@gmail.com>
Date2020-07-19 09:41 -0700
Message-ID<2d65a581-c20d-4174-9523-1bb10aa181f0o@googlegroups.com>
In reply to#38542
Den söndag 19 juli 2020 kl. 15:47:14 UTC+2 skrev JJ:
> On Sat, 18 Jul 2020 08:45:58 -0700 (PDT), Jonas Thörnvall wrote:
> > 
> > I just can't figure out howto escape the backslash
> > ustring='"\\u{'+hexString+'}"';
> 
> It's not possible to dynamically create a `\u` or `\x` escaped character
> where the character code is from separate source. Unless `eval()` or similar
> method is used.
> 
> Use `String.fromCodePoint()` instead.

Hello JJ, thanks for trying but 119704 using 
uniarr.push(String.fromCodePoint(i));
Still just produce a rectangle.
So it is not the same charset UTF-32?

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#38550

Fromluserdroog <luser.droog@gmail.com>
Date2020-07-19 11:53 -0700
Message-ID<5a10a2a5-52ed-4c98-8880-7bd0840f71cbo@googlegroups.com>
In reply to#38549
On Sunday, July 19, 2020 at 11:42:01 AM UTC-5, Jonas Thörnvall wrote:
> Den söndag 19 juli 2020 kl. 15:47:14 UTC+2 skrev JJ:
> > On Sat, 18 Jul 2020 08:45:58 -0700 (PDT), Jonas Thörnvall wrote:
> > > 
> > > I just can't figure out howto escape the backslash
> > > ustring='"\\u{'+hexString+'}"';
> > 
> > It's not possible to dynamically create a `\u` or `\x` escaped character
> > where the character code is from separate source. Unless `eval()` or similar
> > method is used.
> > 
> > Use `String.fromCodePoint()` instead.
> 
> Hello JJ, thanks for trying but 119704 using 
> uniarr.push(String.fromCodePoint(i));
> Still just produce a rectangle.
> So it is not the same charset UTF-32?

It could be that the glyph is not present in the current font.

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#38551

FromJonas Thörnvall <jonas.thornvall@gmail.com>
Date2020-07-19 12:00 -0700
Message-ID<5d5af542-a040-4983-8293-58fe2885a153o@googlegroups.com>
In reply to#38550
Den söndag 19 juli 2020 kl. 20:53:52 UTC+2 skrev luserdroog:
> On Sunday, July 19, 2020 at 11:42:01 AM UTC-5, Jonas Thörnvall wrote:
> > Den söndag 19 juli 2020 kl. 15:47:14 UTC+2 skrev JJ:
> > > On Sat, 18 Jul 2020 08:45:58 -0700 (PDT), Jonas Thörnvall wrote:
> > > > 
> > > > I just can't figure out howto escape the backslash
> > > > ustring='"\\u{'+hexString+'}"';
> > > 
> > > It's not possible to dynamically create a `\u` or `\x` escaped character
> > > where the character code is from separate source. Unless `eval()` or similar
> > > method is used.
> > > 
> > > Use `String.fromCodePoint()` instead.
> > 
> > Hello JJ, thanks for trying but 119704 using 
> > uniarr.push(String.fromCodePoint(i));
> > Still just produce a rectangle.
> > So it is not the same charset UTF-32?
> 
> It could be that the glyph is not present in the current font.

No it is there try it yourself.

<HTML>

<BODY BGCOLOR=YELLOW>
<B><font size=5>UNICODE SYMBOLS UTF-16 |</font>
 MIN<input type="number" id="xmin" name="xmin" value=0 size="10" onChange="setrange()">
  | MAX<input type="number" id="xmax" name="xmax"  value=719 size="10" disabled></B> 
 <input type="submit" value="Page+" onclick="plus()"> |  
 <input type="submit" value="Page-" onclick="minus()">
 <br>
 </BODY>
</HTML>
<canvas id="myCanvas" width="1900" height="890"></canvas>
<script>
var c = document.getElementById("myCanvas");
var ctm = c.getContext("2d");


function plus(){
	document.getElementById('xmin').value=min+720;
	document.getElementById('xmax').value=max+720;
	unicode();
}

function minus(){
	if(min>0){
		document.getElementById('xmin').value=min-720;
		document.getElementById('xmax').value=max-720;
		unicode();
	}
}

function setrange(){
min=document.getElementById('xmin').value;
min=parseInt(min);
max=min+720;
document.getElementById('xmax').value=max;
unicode();
}

let uniarr = [];

function unicode(){
    ctm.fillStyle = "#000000";
	ctm.fillRect(0, 0, 1900, 880);
	var k=20;
	var l=30;
	min=document.getElementById('xmin').value;
	max=document.getElementById('xmax').value;
	min=parseInt(min);
	max=parseInt(max);
	
	for(var i=min;i<=max; i++){ 
		//hexString = i.toString(16);
		//ustring='"\\'+'u{'+hexString+'}"';
	    //uniarr.push(ustring);
		uniarr.push(String.fromCodePoint(i));
		
	}
	
	var j=min;
	while (j<=max){
		ctm.font = "32px courier bold";
		ctm.fillStyle = 'white';
		//ctm.fillText(uniarr[j],k, l );
		ctm.fillText("\u{1D122}", k, l);

		ctm.font = "12px courier bold";
		ctm.fillStyle = 'white';
		ctm.fillText(j,k, l+20 );
		k=k+40;
		j++;
		if(k>1800){k=20;l=l+54;};
	}
}

unicode();
</script>

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#38552

FromBen Bacarisse <ben.usenet@bsb.me.uk>
Date2020-07-19 20:58 +0100
Message-ID<87v9ijp98l.fsf@bsb.me.uk>
In reply to#38549
Jonas Thörnvall <jonas.thornvall@gmail.com> writes:

> Den söndag 19 juli 2020 kl. 15:47:14 UTC+2 skrev JJ:
>> On Sat, 18 Jul 2020 08:45:58 -0700 (PDT), Jonas Thörnvall wrote:
>> > 
>> > I just can't figure out howto escape the backslash
>> > ustring='"\\u{'+hexString+'}"';
>> 
>> It's not possible to dynamically create a `\u` or `\x` escaped character
>> where the character code is from separate source. Unless `eval()` or similar
>> method is used.
>> 
>> Use `String.fromCodePoint()` instead.
>
> Hello JJ, thanks for trying but 119704 using

119704 is not 0x1d122.  That's 119074.

  $ nodejs
  > String.fromCodePoint(119074) === "\u{1d122}"
  true

-- 
Ben.

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#38554

FromJonas Thörnvall <jonas.thornvall@gmail.com>
Date2020-07-19 14:17 -0700
Message-ID<53e86aab-f54d-4145-8921-c12576e1613do@googlegroups.com>
In reply to#38552
Den söndag 19 juli 2020 kl. 21:58:54 UTC+2 skrev Ben Bacarisse:
> Jonas Thörnvall <jonas.thornvall@gmail.com> writes:
> 
> > Den söndag 19 juli 2020 kl. 15:47:14 UTC+2 skrev JJ:
> >> On Sat, 18 Jul 2020 08:45:58 -0700 (PDT), Jonas Thörnvall wrote:
> >> > 
> >> > I just can't figure out howto escape the backslash
> >> > ustring='"\\u{'+hexString+'}"';
> >> 
> >> It's not possible to dynamically create a `\u` or `\x` escaped character
> >> where the character code is from separate source. Unless `eval()` or similar
> >> method is used.
> >> 
> >> Use `String.fromCodePoint()` instead.
> >
> > Hello JJ, thanks for trying but 119704 using
> 
> 119704 is not 0x1d122.  That's 119074.
> 
>   $ nodejs
>   > String.fromCodePoint(119074) === "\u{1d122}"
>   true
> 
> -- 
> Ben.

Yeah you are correct Ben it is working, thanks JJ thanks luserdroog thanks Ban.
Problem solved,
JT

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