W3.JS W3Data
W3Data nima?
W3Data — server ma’lumotlarini HTML ilovalarga yetkazib berish uchun vosita.
W3Dataning vazifasi — w3.js’ni veb-serverdagi ma’lumotlar bilan ta’minlash.
Ilova modellari
W3Data server ilovalarini tavsiflash uchun ilova modellaridan (JSON’da yozilgan) foydalanadi.
Ushbu oddiy model ma’lumotlar bazasidan ma’lumot olish uchun to‘liq ilovani tavsiflaydi:
model_customers.js
{
"database" : {
"connection" : "localmysql",
"sql" : "SELECT * FROM Customers"}
}
Modellar serverda saqlanadi va ularni veb-foydalanuvchi tahrirlay olmaydi.
Ularni tahrirlash uchun server administratori yoki serverdagi fayllarni tahrirlash huquqi berilgan foydalanuvchi bo‘lishingiz kerak.
Ilova modelidan foydalanish oson: w3Http() funksiyasini chaqirganingizda w3data.php’ga shunchaki model nomini qo‘shing:
Misol
<script>
w3.getHttpObject("w3data.php?model=model_customers", myFunction);
function myFunction(myObject) {
w3.displayObject("id01", myObject);
}
</script>
O‘zingiz sinab ko‘ring »
Matnli fayldan ko‘rsatish
Misol
<script>
w3.getHttpObject("w3data.php?model=model_cd_from_txt", myFunction);
function myFunction(myObject) {
w3.displayObject("id01", myObject);
}
</script>
O‘zingiz sinab ko‘ring »
Ilovada ishlatilgan model quyidagicha:
model_cd_from_txt
{
"data" : {
"type" : "csvfile",
"filename" : "cd_catalog.txt",
"items" : [
{"name" : "title", "index" : 1},
{"name" : "artist", "index" : 2},
{"name" : "price", "index" : 5}
]
}
}
Vergul bilan ajratilgan matnli fayl quyidagicha:
cd_catalog.txt
Empire Burlesque,Bob Dylan,USA,Columbia,10.90,1985
Hide your heart,Bonnie Tyler,UK,CBS Records,9.90,1988
Greatest Hits,Dolly Parton,USA,RCA,9.90,1982
Still got the blues,Gary Moore,UK,Virgin records,10.20,1990
Eros,Eros Ramazzotti,EU,BMG,9.90,1997
One night only,Bee Gees,UK,Polydor,10.90,1998
Sylvias Mother,Dr.Hook,UK,CBS,8.10,1973
Maggie May,Rod Stewart,UK,Pickwick,8.50,1990
JSON fayldan ko‘rsatish
Misol
<script>
w3.getHttpObject("w3data.php?model=model_cd_from_json", myFunction);
function myFunction(myObject) {
w3.displayObject("id01", myObject);
}
</script>
O‘zingiz sinab ko‘ring »
Ilovada ishlatilgan model quyidagicha:
model_cd_from_json.js
{
"data" : {
"type" : "jsonfile",
"filename" : "cd_catalog.js",
"record" : "cd"
"items" : [
{"name" : "title", "nodename" : "title"},
{"name" : "artist", "nodename" : "artist"},
{"name" : "price", "nodename" : "price"}
]
}
}
JSON fayl quyidagicha:
cd_catalog.js
{
"cd" : [
{ "title" : "Empire Burlesque", "artist" : "Bob Dylan", "price" : "10.90" },
{ "title" : "Hide your heart", "artist" : "Bonnie Tyler", "price" : "9.90" },
{ "title" : "Greatest Hits", "artist" : "Dolly Parton", "price" : "9.90" },
{ "title" : "Still got the blues", "artist" : "Gary Moore", "price" : "10.20" },
{ "title" : "Eros", "artist" : "Eros Ramazzotti", "price" : "9.90" },
{ "title" : "One night only", "artist" : "Bee Gees", "price" : "10.90" },
{ "title" : "Sylvias Mother", "artist" : "Dr.Hook", "price" : "8.10" }
]
}
XML fayldan ko‘rsatish
Misol
<script>
w3.getHttpObject("w3data.php?model=model_cd_from_xml", myFunction);
function myFunction(myObject) {
w3.displayObject("id01", myObject);
}
</script>
O‘zingiz sinab ko‘ring »
Ilovada ishlatilgan model quyidagicha:
model_cd_from_xml
{
"data" : {
"type" : "xmlfile",
"filename" : "cd_catalog.xml",
"record" : "CD",
"items" : [
{"name" : "artist", "nodename" : "ARTIST"},
{"name" : "title", "nodename" : "TITLE"},
{"name" : "country", "nodename" : "COUNTRY"}
]
}
}
XML fayl quyidagicha:
cd_catalog.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<CATALOG>
<CD>
<TITLE>Empire Burlesque</TITLE>
<ARTIST>Bob Dylan</ARTIST>
<COUNTRY>USA</COUNTRY>
<COMPANY>Columbia</COMPANY>
<PRICE>10.90</PRICE>
<PUBLISHED>1985</PUBLISHED>
</CD>
<CD>
<TITLE>Hide your heart</TITLE>
<ARTIST>Bonnie Tyler</ARTIST>
<COUNTRY>UK</COUNTRY>
<COMPANY>CBS Records</COMPANY>
<PRICE>9.90</PRICE>
<PUBLISHED>1988</PUBLISHED>
</CD>
<CD>
<TITLE>Greatest Hits</TITLE>
<ARTIST>Dolly Parton</ARTIST>
<COUNTRY>USA</COUNTRY>
<COMPANY>RCA</COMPANY>
<PRICE>9.90</PRICE>
<PUBLISHED>1982</PUBLISHED>
</CD>
<CD>
<TITLE>Still got the blues</TITLE>
<ARTIST>Gary Moore</ARTIST>
<COUNTRY>UK</COUNTRY>
<COMPANY>Virgin records</COMPANY>
<PRICE>10.20</PRICE>
<PUBLISHED>1990</PUBLISHED>
</CD>
<CD>
<TITLE>Eros</TITLE>
<ARTIST>Eros Ramazzotti</ARTIST>
<COUNTRY>EU</COUNTRY>
<COMPANY>BMG</COMPANY>
<PRICE>9.90</PRICE>
<PUBLISHED>1997</PUBLISHED>
</CD>
<CD>
<TITLE>One night only</TITLE>
<ARTIST>Bee Gees</ARTIST>
<COUNTRY>UK</COUNTRY>
<COMPANY>Polydor</COMPANY>
<PRICE>10.90</PRICE>
<PUBLISHED>1998</PUBLISHED>
</CD>
<CD>
<TITLE>Sylvias Mother</TITLE>
<ARTIST>Dr.Hook</ARTIST>
<COUNTRY>UK</COUNTRY>
<COMPANY>CBS</COMPANY>
<PRICE>8.10</PRICE>
<PUBLISHED>1973</PUBLISHED>
</CD>
</CATALOG>
Yuklab olish
Faylni yuklab oling: https://www.w3schools.com/w3js/w3data.php.txt.
Faylni veb-saytingizga nusxalang va nomini w3data.php’ga o‘zgartiring.
W3Schools Pathfinder
Yutuqlaringizni kuzating – bu bepul!