This article analyzes ajax cross-domain in jquery through examples. Share it with everyone for your reference, the details are as follows:
JSONP is an unofficial protocol that allows integrating Script tags on the server side and returning them to the client, enabling cross-domain access in the form of javascript callback
Method 1: jsonp's getJSON
js
var url = "http://localhost/mytest/jsonp_php.php?callback=?";
$.getJSON(url, {
"age": 21,
"name": "kitty"
}, function (data) {
alert("name:" + data.name + ", age:" + data.age);
});
php
<?php
$age=$_GET["age"];
$name=$_GET["name"];
$jsondata = "{age:$age, name:'$name'}";
echo $_GET['callback'].'('.$jsondata.')';
?>
Two jsonp of $.ajax
js
$.ajax({
type: 'GET',
url: 'http://localhost/mytest/jsonp_php.php',
dataType: "jsonp",
jsonp: "callback5",
jsonpCallback:"flightHandler",
data: {
"age": 21,
"name": "kitty"
},
success: function (data) {
alert("name:" + data.sd + ", age:" + data.aa)
}
})
php
<?php
$age=$_GET["age"];
$name=$_GET["name"];
$ary=array("sd"=>"sdfg","aa"=>23);
$jsondata=json_encode($ary);
echo $_GET['callback5'].'('.$jsondata.')';
?>
I hope this article will be helpful to everyone in jQuery programming.
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