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JavaScript Tutorial >> JavaScript Reserve Characters.


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In JavaScript there are a lot of characters/symbols that we may want to display in the web browser that simply are not on the keyboard such as , ►, → , and . Fortunately, in HTML there is a way to reproduce these special characters without resorting to the use of an image. By placing an ampersand followed by the number symbol, followed by a valid number and a semi colon we can produce the HTML character list. The following example will demonstrate this as well a an incremental counter that will output the numbers 32-254 and place that number between &# signs available on each keyboard; to output the main special JavaScript Reserve Characters for display.

List of Reserve Characters in JavaScript with codes.

Character Entity Number Out put Character Entity Number Out put
  !!
""##
$$%%
&&''
(())
**++
,,--
..//
0011
2233
4455
6677
8899
::&#59;;
&#60;<&#61;=
&#62;>&#63;?
&#64;@&#65;A
&#66;B&#67;C
&#68;D&#69;E
&#70;F&#71;G
&#72;H&#73;I
&#74;J&#75;K
&#76;L&#77;M
&#78;N&#79;O
&#80;P&#81;Q
&#82;R&#83;S
&#84;T&#85;U
&#86;V&#87;W
&#88;X&#89;Y
&#90;Z&#91;[
&#92;\&#93;]
&#94;^&#95;_
&#96;`&#97;a
&#98;b&#99;c
&#100;d&#101;e
&#102;f&#103;g
&#104;h&#105;i
&#106;j&#107;k
&#108;l&#109;m
&#110;n&#111;o
&#112;p&#113;q
&#114;r&#115;s
&#116;t&#117;u
&#118;v&#119;w
&#120;x&#121;y
&#122;z&#123;{
&#124;|&#125;}
&#126;~&#127;
&#128;&#129;
&#130;&#131;ƒ
&#132;&#133;
&#134;&#135;
&#136;ˆ&#137;
&#138;Š&#139;
&#140;Œ&#141;
&#142;Ž&#143;
&#144;&#145;
&#146;&#147;
&#148;&#149;
&#150;&#151;
&#152;˜&#153;
&#154;š&#155;
&#156;œ&#157;
&#158;ž&#159;Ÿ
&#160; &#161;¡
&#162;¢&#163;£
&#164;¤&#165;¥
&#166;¦&#167;§
&#168;¨&#169;©
&#170;ª&#171;«
&#172;¬&#173;­
&#174;®&#175;¯
&#176;°&#177;±
&#178;²&#179;³
&#180;´&#181;µ
&#182;&#183;·
&#184;¸&#185;¹
&#186;º&#187;»
&#188;¼&#189;½
&#190;¾&#191;¿
&#192;À&#193;Á
&#194;Â&#195;Ã
&#196;Ä&#197;Å
&#198;Æ&#199;Ç
&#200;È&#201;É
&#202;Ê&#203;Ë
&#204;Ì&#205;Í
&#206;Î&#207;Ï
&#208;Ð&#209;Ñ
&#210;Ò&#211;Ó
&#212;Ô&#213;Õ
&#214;Ö&#215;×
&#216;Ø&#217;Ù
&#218;Ú&#219;Û
&#220;Ü&#221;Ý
&#222;Þ&#223;ß
&#224;à&#225;á
&#226;â&#227;ã
&#228;ä&#229;å
&#230;æ&#231;ç
&#232;è&#233;é
&#234;ê&#235;ë
&#236;ì&#237;í
&#238;î&#239;ï
&#240;ð&#241;ñ
&#242;ò&#243;ó
&#244;ô&#245;õ
&#246;ö&#247;÷
&#248;ø&#249;ù
&#250;ú&#251;û
&#252;ü&#253;ý
&#254;þ

How to Generate JavaScript Reserved Characters?


<html>

<head><title>JavaScript Tutorial</title></head>

<body>

<table width="100%">

 <tr class="tblHead">

  <td><b>Character Entity Number</b></td>

  <td><b>Out put</b></td>

  <td><b>Character Entity Number</b></td>

  <td><b>Out put</b></td>

 </tr>



 <tr class="simple">

 <script language="JavaScript">

 <!-- 

  var c = 0;

  var cl = 0;

  for(var count=32; count<=254; count++) 

  {

 

    if (cl==0){

      cls ="formated";

      cl=1;

    }else{

      cls ="simple";

      cl=0;

    }



    if (c<2){

      document.write("<td>&amp;#");

      document.write(count + ";");

      document.write("</td><td>&#" + count + ";</td>");

      c++;

    }else{

      document.write("</tr>");

      document.write("<tr class=" + cls + ">");

      c=0;

    }



  }

 // -->



 </script>

 </table>

</body>

</html>


List of Reserve Key words in JavaScript

JavaScript is very heavy handed in its restrictions on reserved key words. The reserved JavaScript key words list is as under

abstract
boolean break byte
case catch char class const continue
debugger default delete do double
else enum export extends
false final finally float for function
goto
if implements import in instanceof int interface
long
native new null
package private protected public
return
short static super switch synchronized
this throw throws transient true try typeof
var volatile void
while with

Most of those words are not even used in the JavaScript language. A reserved word cannot be used...

  1. As a name in literal object notation in JavaScript
  2. As a member name in dot notation in JavaScript
  3. As a function argument of JavaScript
  4. As a var Variable in JavaScript
  5. As an unqualified global JavaScript variable
  6. As a statement label of JavaScript

There is no excuse for the first two restrictions in JavaScript. None. There is an excuse for the second two restrictions, but it is very weak.


Escape Characters in JavaScript

Escape characters in JavaScript are used inside literal JavaScript strings to allow print formatting as well as preventing certain JavaScript characters from causing interpretation JavaScript errors. Each JavaScript escape character starts with a backslash. The available JavaScript character sequences list for Escape characters are as under.

JavaScript Sequence Name of JavaScript  Escape Character identity JavaScript Sequence Name of JavaScript  Escape Character identity
\b backspace in JavaScript \f formfeed escape character in JavaScript
\t horizontal tab printing in JavaScript \" double quote escape character
\n newline printing in JavaScript \' single quote printing in JavaScript
\r carriage return in JavaScript \\ backslash printing in JavaScript
\### Latin encoded character in JavaScript \uHHHH Unicode encoded character using JavaScript
 

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JavaScript Table Header, Row, Cell and Data Objects Examples



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