Boolean object in JavaScript

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The Boolean object represents two values either “true” or “false”.

new Boolean(value);

If value parameter is omitted, 0, -0, null, false, NaN, undefined, or the empty string (“”), the object has an initial value of false.

Here’s a simple test for the JavaScript boolean object, here’s the HTML anchor tag I used to call a function:

<a href=”http://www.melvinswebstuff.com” onclick=”GetBoolean(‘true’); return false;”>Get Boolean</a>

Here’s the JavaScript function:

function GetBoolean(bBool){
	//Create a boolean object
	var myBoolean = new Boolean();
	myBoolean = true;

	if(myBoolean) alert('myBoolean = ' + myBoolean);

	if(myBoolean) alert('bBool = ' + bBool);

	if(bBool == myBoolean){
		alert('bBool == myBoolean');
	} else {
		alert('bBool <> myBoolean');
	}

}

The correct use of em and en

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The em dash (—) is used to indicate a sudden break in thought.

The en dash (–) is used to indicate a range of just about anything with numbers, including dates, numbers, game scores, and pages in any sort of document.

HTML Special Characters

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&ndash; &#8211; en dash
&mdash; &#8212; em dash
¡ &iexcl; &#161; inverted exclamation
¿ &iquest; &#191; inverted question mark
" &quot; &#34; quotation mark
&ldquo; &#8220; left double curly quote
&rdquo; &#8221; right double curly quote
'   &#39; apostrophe (single quote)
&lsquo; &#8216; left single curly quote
&rsquo; &#8217; right single curly quote
«

»
&laquo;

&raquo;
&#171;

&#187;
guillemets
  &nbsp; &#160; non-breaking space
Symbols
& &amp; &#38; ampersand
¢ &cent; &#162; cent
© &copy; &#169; copyright
÷ &divide; &#247; divide
> &gt; &#62; greater than
< &lt; &#60; less than
µ &micro; &#181; micron
· &middot; &#183; middle dot
&para; &#182; pilcrow (paragraph sign)
± &plusmn; &#177; plus/minus
&euro; &#8364; Euro
£ &pound; &#163; British Pound Sterling
® &reg; &#174; registered
§ &sect; &#167; section
&trade; &#153; trademark
¥ &yen; &#165; Japanese Yen
Diacritics
á

Á
&aacute;

&Aacute;
&#225;

&#193;
lower-case "a" with acute accent

upper-case "A" with acute accent
à

À
&agrave;

&Agrave;
&#224;

&#192;
lower-case "a" with grave accent

upper-case "A" with grave accent
â

Â
&acirc;

&Acirc;
&#226;

&#194;
lower-case "a" with circumflex

upper-case "A" with circumflex
å

Å
&aring;

&Aring;
&#229;

&#197;
lower-case "a" with ring

upper-case "A" with ring
ã

Ã
&atilde;

&Atilde;
&#227;

&#195;
lower-case "a" with tilde

upper-case "A" with tilde
ä

Ä
&auml;

&Auml;
&#228;

&#196;
lower-case "a" with diaeresis/umlaut

upper-case "A" with diaeresis/umlaut
æ

Æ
&aelig;

&AElig;
&#230;

&#198;
lower-case "ae" ligature

upper-case "AE" ligature
ç

Ç
&ccedil;

&Ccedil;
&#231;

&#199;
lower-case "c" with cedilla

upper-case "C" with cedilla
é

É
&eacute;

&Eacute;
&#233;

&#201;
lower-case "e" with acute accent

upper-case "E" with acute accent
è

È
&egrave;

&Egrave;
&#232;

&#200;
lower-case "e" with grave accent

upper-case "E" with grave accent
ê

Ê
&ecirc;

&Ecirc;
&#234;

&#202;
lower-case "e" with circumflex

upper-case "E" with circumflex
ë

Ë
&euml;

&Euml;
&#235;

&#203;
lower-case "e" with diaeresis/umlaut

upper-case "E" with diaeresis/umlaut
í

Í
&iacute;

&Iacute;
&#237;

&#205;
lower-case "i" with acute accent

upper-case "I" with acute accent
ì

Ì
&igrave;

&Igrave;
&#236;

&#204;
lower-case "i" with grave accent

upper-case "I" with grave accent
î

Î
&icirc;

&Icirc;
&#238;

&#206;
lower-case "i" with circumflex

upper-case "I" with circumflex
ï

Ï
&iuml;

&Iuml;
&#239;

&#207;
lower-case "i" with diaeresis/umlaut

upper-case "I" with diaeresis/umlaut
ñ

Ñ
&ntilde;

&Ntilde;
&#241;

&#209;
lower-case "n" with tilde

upper-case "N" with tilde
ó

Ó
&oacute;

&Oacute;
&#243;

&#211;
lower-case "o" with acute accent

upper-case "O" with acute accent
ò

Ò
&ograve;

&Ograve;
&#242;

&#210;
lower-case "o" with grave accent

upper-case "O" with grave accent
ô

Ô
&ocirc;

&Ocirc;
&#244;

&#212;
lower-case "o" with circumflex

upper-case "O" with circumflex
ø

Ø
&oslash;

&Oslash;
&#248;

&#216;
lower-case "o" with slash

upper-case "O" with slash
õ

Õ
&otilde;

&Otilde;
&#245;

&#213;
lower-case "o" with tilde

upper-case "O" with tilde
ö

Ö
&ouml;

&Ouml;
&#246;

&#214;
lower-case "o" with diaeresis/umlaut

upper-case "O" with diaeresis/umlaut
ß &szlig; &#223; ess-tsett
ú

Ú
&uacute;

&Uacute;
&#250;

&#218;
lower-case "u" with acute accent

upper-case "U" with acute accent
ù

Ù
&ugrave;

&Ugrave;
&#249;

&#217;
lower-case "u" with grave accent

upper-case "U" with grave accent
û

Û
&ucirc;

&Ucirc;
&#251;

&#219;
lower-case "u" with circumflex

upper-case "U" with circumflex
ü

Ü
&uuml;

&Uuml;
&#252;

&#220;
lower-case "u" with diaeresis/umlaut

upper-case "U" with diaeresis/umlaut
ÿ &yuml; &#255; lower-case "y" with diaeresis/umlaut
´

`
  &#180;

&#96;
acute accent with no letter

grave accent/reversed apostrophe with no letter