我正在尝试在另一个 Ajax 成功函数中进行 Ajax 调用,但它不知何故不起作用。我在控制台中收到以下错误。我不明白这是什么意思:
Object { readyState: 0, getResponseHeader: .ajax/v.getResponseHeader(), getAllResponseHeaders: .ajax/v.getAllResponseHeaders(), setRequestHeader: .ajax/v.setRequestHeader(), overrideMimeType: .ajax/v.overrideMimeType(), statusCode: .ajax/v.statusCode(), abort: .ajax/v.abort(), state: .Deferred/d.state(), always: .Deferred/d.always(), then: .Deferred/d.then(), 10 more... }
我从对象中找到了类似以下内容的内容
statusText:"语法错误:指定了无效或非法的字符串"
.JS
//Update the board with the moves so far made
var updateBoard = function() {
var style;
$.ajax({
type: "POST",
url: "engine/main.php",
data: {code: 2},
success: function(response) {
if(response != "") {
var obj = JSON.parse(response);
lastClick = obj[obj.length - 1].player;
$(obj).each(function (i, val) {
if (val.player == 1) {
style = "cross";
}
else if (val.player == 2) {
style = "circle";
}
$('td[data-cell="' + val.cell + '"]').html(val.sign).addClass(style);
});
if(obj.length > 2) {
makeDecision();
}
}
else {
lastClick = null;
$('td').html("").removeClass();
}
setTimeout(updateBoard, 1000);
}
});
};
updateBoard();
function makeDecision() {
console.log('starting decision function');
$.ajax({
type: "engine/main.php",
data: {code: 3},
success: function(winner) {
console.log('end');
console.log(winner);
},
error: function(data) {
console.log(data);
}
});
}
.PHP
if(isset($_POST['code'])) {
$code = $_POST['code'];
//Handle player number on game start
if($code == 1) {
if (!isset($_COOKIE['gamePlay'])) {
header('Location: index');
}
$playerCode = $_COOKIE['gamePlay'];
$player = $playersHandler->getPlayer($playerCode);
echo $player;
}
// Update board with new moves
else if($code == 2) {
$currentPosition = $gameHandler->getMoves();
echo $currentPosition;
}
else if($code == 3) {
$result = $code; //$gameHandler->decide();
echo $result;
}
//Reset Board
else if($code == 4) {
$gameHandler->reset();
}
}
您正在将无效字符串传递给makeDecision
函数 ajax 调用中的type
属性。应按如下方式进行设置:
type: 'POST',
url: 'engine/main.php',
...
而不是
type: 'engine/main.php'
确保以下行
var obj = JSON.parse(response);
返回数组,而不是对象。如果obj
不是数组,则obj.length
undefined
<</p>
你不能在javascript中直接obj.length
获取对象的长度。因此,如果您得到适当的响应。像这样获取解析对象的长度。
var length = Object.keys(obj).length;
然后
lastClick = obj[length-1].player;
正确使用这样的$.each
..
$.each(obj,function (i, val){
//code
});
你可以在 ajaxComplate 事件中再次调用 ajax,如下所示:
$( document ).ajaxComplete(function() {
$.ajax({
type: "post",
url: 'engine/main.php',
data: {code: 3},
success: function(winner) {
console.log('end');
console.log(winner);
},
error: function(data) {
console.log(data);
}
});
});