Re: Regulérní výrazy regex nápady a šablony
Odkazy na online regex editory:
https://regex101.com/
https://www.debuggex.com/r/LyIpMYTAhJ9Gja4x
https://regex101.com/
https://www.debuggex.com/r/LyIpMYTAhJ9Gja4x
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Další témata ....(Topics)
var 1_radian_to_degree = 180 / Math.PI; // 57,295779513082320876798154814105 degree
var 1_degree_to_radian = Math.PI / 180; // 0,01745329251994329576923690768489 radian
var 360_degree = 2 * Math.PI * 1_radian_to_degree;
var degree = 36.86;
var opposite = 600;
var hypotenuse = 1000;
var adjacent = 800;
// degree
// sin 45° == 0.7071067811865475;
var sin = Math.sin(45 * Math.PI / 180.0)
//sin == 0.7071067811865475;
// vypocet prepony (hypotenuse), kdyz zname
// protilehlou (opposite) a uhel (degree)
hypotenuse2 = opposite/ Math.sin(degree * Math.PI / 180.0);
// vypocet protilehle (opposite)
opposite2 = hypotenuse * Math.sin(degree * Math.PI / 180);
// vypocitat uhel alfa z velikosti protilehle a prepony ve stupnich (degree)
degree2 = Math.asin(opposite / hypotenuse)* (180/Math.PI); // 1rad
// velikost prepony pomoci prilehle (adjacent) strany a cos a uhlu v stupnich (degree)
hypotenuse3 = adjacent / Math.cos(degree * Math.PI / 180);
// velikost prilehle (adjacent) strany pomoci prepony a cos a uhlu v stupnich (degree)
adjacent2 = hypotenuse * Math.cos(degree * Math.PI / 180);
tan = Math.tan(degree * Math.PI/180); // 45° == 0.9999999999999
degree3 = Math.atan(opposite / adjacent)* (180/Math.PI); // 1rad
adjacent3 = opposite / Math.tan(degree * Math.PI / 180);
opposite3 = adjacent * Math.tan(degree * Math.PI / 180);
Pokud vytvářite novou instanci nějakého objektu, musíte použít klíčové slovo new
class myClass {
private $var = 'Who I am? ';
function __construct($val){
$this->var .= $val;
}
function fc()
{
print 'Hello from myClass <br>';
print $this->var;
}
}
$myInstance = new myClass('I am a variable');
$myInstance->fc(); // Hello from myClass <br>Who I am? I am a variable
Získání IP adresy v PHP.
$serverIP=$_SERVER['REMOTE_ADDR'];
echo "document.write("Your IP address is: <b>" . $serverIP . "</b>")";
How Copy a Text to Clipboard JavaScript for IE.
Jak kopírovat text do schránky pomocí javascript pro Internet Explorer.
function ClipBoard()
{
// idText is ID some textarea with style display:none;
// idDivWithText is some div with text where will copied to
// clipoboard
idText.innerText = idDivWithText.innerText;
Copied = idText.createTextRange();
Copied.execCommand("RemoveFormat");
Copied.execCommand("Copy");
}
Tohle jsou některé metody objektu document
clear
createDocument
createDocumentFragment
createElement
createEvent
createEventObject
createRange
createTextNode
getElementById
/* nejpouzivanejsi metoda objektu document, ktera
ziska handle elementu dle jeho id*/
getElementByTagName
var e = document.getElementById('list');
e= e.getElementsByTagName('span');
i=0;
while(i < e.length){
e[i].style.color = "green";
}
write
document.write("some text");
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Url:re-regulerni-vyrazy-regex-napady-a-sablony-id-2313