Number format javascript
Jak naformátovat číslo například 1000 aby výstup byl 1 000.
How formatting Numbers in javascript
// in us return 1,000.00 in czech cz return 1 000,00
var newNumber = format_Of_Number ('cz', 1000.00); // cz is czech format - us is us format of number
function format_Of_Number (stat, num) {
stat = stat.toLowerCase();
nStr = this + '';
var x = nStr.split('.');
var x1 = x[0];
var x2;
if(stat=='cz')
x2 = x.length > 1 ? ',' + x[1] : ''; // nahradime tecku carkou
else if(stat=='us')
x2 = x.length > 1 ? '.' + x[1] : ''; // us format
var rgx = /(d+)(d{3})/;
while (rgx.test(x1)) {
if(stat=='cz')
x1 = x1.replace(rgx, '$1' + ' ' + '$2'); // nahradime mezerou cesky format 1 000,00
else if(stat=='us')
x1 = x1.replace(rgx, '$1' + ',' + '$2'); // us format 1,000.00
}
return x1 + x2;
}
77LW NO topic_id
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Další témata ....(Topics)
CORS-Cross-Origin-Resource-Sharing Header set Access-Control-Allow-Origin Source Code Example
Usefull Links here
https://www.w3.org/wiki/CORS_EnabledApache .htaccess Allow File Types
<IfModule mod_setenvif.c>
<IfModule mod_headers.c>
<FilesMatch ".(bmp|cur|gif|ico|jpe?g|png|svgz?|webp)$">
SetEnvIf Origin ":" IS_CORS
Header set Access-Control-Allow-Origin "*" env=IS_CORS
</FilesMatch>
</IfModule>
</IfModule>
.htaccess which is closest to the file!!!!!
Date: 17.06.2020 - 08:09Getter a Setter
Získej nebo Nastav.
Michal už není Váš kamarád, tak jej změníte pomocí set:
Získej nebo Nastav.
Třídy v javascript dovolují použití get a set instrukci.
get vrátí hodnotu určité zadané proměnné.
set jí může změnit.
class Person {
constructor(name) {
this.personName = name;
}
get pname() {
return this.personName;
}
// i kdyz set vypada jako funkce, musi mit pouze jeden parametr
set pname(x) {
this.personName = x;
}
}
var myFriend = new Person("Michael");
Jméno osoby přítele získáme například:
var strMyFriendName = myFriend.pname; // bez () na konci!!!!!!
alert(strMyFriendName);
Michal už není Váš kamarád, tak jej změníte pomocí set:
// hodnota se nepřirazuje do závorek (), ale pomocí = rovná se!!!!
myFriend.pname = "Renata";
strMyFriendName = myFriend.pname;
alert(strMyFriendName);
Jak pomocí javascript odeslat či přijmout data na/ze serveru
// volani funkce s adresou php stranky kde pomoci $_GET["data1"] a $_GET["data2"] vyjmeme
// zaslana data v url a ulozime na serveru
// zpet muzeme ziskat hlaseni zda operace probehla v poradku
httpGet("http://www.myweb.com/save_get_data.php?data1=hello&data2=someText");
function httpGet(theUrl)
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
createDiv(xmlhttp.responseText);
}
}
xmlhttp.open("GET", theUrl, false);
xmlhttp.send();
}
// zobrazi text php stranky zda vse probehlo v poradku, pokud si v php scriptu nastavim echo
// s textem ze operace pobehla ok nebo ne pak v _div se objevi toto hlašení
function createDiv(responsetext)
{
var _body = document.getElementsByTagName("body")[0];
var _div = document.createElement("div");
_div.innerHTML = responsetext;
_body.appendChild(_div);
}
// multiline string old school tip trick
// create elemnt div style none or hidden with text
var sMulitilineString = document.getElementById('idHiddenDiv').innerHTML; // get text from hidden div
// ES6 with quotes
const htmlString = 'Say hello to
multi-line
strings!';
(typeof "813") // string
(typeof 813) // number
parseInt("10.33") // returns 10 string to integer
parseInt('2def8'); // 2
parseInt('a2def8'); // NaN
parseFloat("10.33") // returns 10.33 string to float
var test_1 = 'string';
var test_2 = ' example';
var suma = test_1 + test_2;
var length = suma.length; // 14
var le = test_1.length; // 6
charAt(index)
/* Returns the character at the specified index */
var str = new String('Sample');
str.charAt(3)); // p
// startsWith
var str = "HELLO WORLD";
var res = str.charAt(0); // H
// endsWith
var res = str.charAt(str.length - 1); // D
charCodeAt(index)
/* Returns an integer representing the Unicode encoding
of the character at the specified location */
var str = new String('Sample');
str.charCodeAt(3)); // 112
fromCharCode([code1[, code2[, ...[, codeN]]]])
/* Returns a string from a number of Unicode character values */
var e = window.event;
var str = String.fromCharCode(e.keyCode); // keydown etc.
concat([item1[, item2[, . . . [, itemN]]]])
/* Returns a new array consisting of a combination of two or more arrays */
var arr1 = new Array("Hello, ", "Dolly uranove");
var arr2 = new Array("World!", "dort");
var myConcatArray = arr1.concat(arr2);
alert(myConcatArray[3]); // dort
concat([string2[, string3[, . . . [, stringN]]]])
/* Returns a string value containing the concatenation
of two or more supplied strings */
var string1 = new String("Hello, ");
var string2 = new String("World!");
var myConcatString = string1.concat(string2); // Hello, World!
indexOf(subString[, startIndex])
/* Returns the character position where the first occurrence
of a substring occurs within a String object */
lastIndexOf(substring[, startindex])
/* Returns the last occurrence of a substring within a String object */
localeCompare(stringExp)
/* Returns a value indicating whether two strings
are equivalent in the current locale */
var str1 = "1";
var str2 = "2";
var n = str1.localeCompare(str2); // -1
var str1 = "2";
var str2 = "2";
var n = str1.localeCompare(str2); // 0
var str1 = "a";
var str2 = "b";
var n = str1.localeCompare(str2); // -1
var str1 = "b";
var str2 = "a";
var n = str1.localeCompare(str2); // 1
match(rgExp)
/* Executes a search on a string using a regular expression
pattern, and returns an array containing the results of that search */
var rgExp = /some text/g;
replace(rgExp, replaceText)
/* Returns a copy of a string with text replaced
using a regular expression or search string */
search(rgExp)
/* Returns the position of the first substring
match in a regular expression search */
n // A newline character
. // Any character except a newline
r // A carriage return character
t // A tab character
b // A word boundary (the start or end of a word)
B // Anything but a word boundary
d // Any digit (same as [0-9])
D // Anything but a digit (same as [^0-9])
s // Single whitespace (space, tab, newline, etc.)
S // Single nonwhitespace
w // A "word character” (same as [A-Za-z0-9_])
W // A "nonword character” (same as [^A-Za-z0-9_])
slice(start, [end])
/* Returns a section of an array or string */
var myString = new String("This is a test");
var mySlice = myString.slice(2,6); // is i // pos: 2 to 5 // 0==T, 1==h, 2==i, 3==s, 4==" ", 5==i
mySlice = myString.slice(-3); // est // end of string
mySlice = myString.slice(0); // This is a test
split([separator[, limit]])
/* Returns the array of strings that results
when a string is separated into substrings */
var str = "one two three";
var words = str.split(" ");
var len = words.length; // 3
substring(start, end)
/* Returns the substring at the specified location
within a String object */
var inpTxt = "Hello there";
alert(inpTxt.substring(6, 10)); // ther
substr(start [, length ])
// Returns a substring beginning at a specified
// location and having a specified length
var s = "The love in Spain.";
ss = s.substr(12, 5); // Spain
tolocaleLowerCase()
/* Returns a string where all alphabetic characters
have been converted to lowercase, taking into account
the host environment's current locale */
toUpperCase()
/* Returns a string where all alphabetic characters
have been converted to uppercase */
var myString = "My text";
myString.anchor //places an HTML anchor with a NAME attribute around specified text in the object
myString.big
myString.blink
myString.bold
myString.concat
myString.fixed
myString.fontcolor
myString.fontsize
myString.charAt
myString.charCodeAt
myString.indexOf
myString.italics
myString.lastindexOf
myString.length
myString.link
myString.match
myString.replace
myString.search
myString.slice
myString.small
myString.split
myString.strike
myString.sub //places HTML SUB tags around text in a String object
myString.substr
myString.substring
myString.sup
myString.toLowerCase
myString.toString
myString.toUpperCase
myString.valueOf
var str = "58";
var res = str.valueOf();
var type = (typeof res); // string
var str = 58;
var res = str.valueOf();
var type = (typeof res); // number
(function () {
String.prototype.isString = true;
String.prototype.trim = function () { return this.replace(/(^\s*)|(\s*$)/g, "") };
String.prototype.endsWith = function (a) { return this.substr(this.length - a.length) == a };
String.prototype.startsWith = function (a) { return this.substr(0, a.length) == a };
})();
Editace: 15.5.2020 - 23:40
Počet článků v kategorii: 77
Url:number-format-javascript