所以我使用的是使用ajax的JavaScript port of RiveScript,當然我不想再使用jQuery。只有一行ajax,我想將其更改爲新的Fetch API。如何將Ajax轉換爲JavaScript中的API?
**FYI: You can see the ajax code in line 1795 of the CDN.**
因此,這裏的原代碼:
return $.ajax({
url: file,
dataType: "text",
success: (function(_this) {
return function(data, textStatus, xhr) {
_this.say("Loading file " + file + " complete.");
_this.parse(file, data, onError);
delete _this._pending[loadCount][file];
if (Object.keys(_this._pending[loadCount]).length === 0) {
if (typeof onSuccess === "function") {
return onSuccess.call(void 0, loadCount);
}
}
};
})(this),
error: (function(_this) {
return function(xhr, textStatus, errorThrown) {
_this.say("Ajax error! " + textStatus + "; " + errorThrown);
if (typeof onError === "function") {
return onError.call(void 0, textStatus, loadCount);
}
};
})(this)
});
這裏是我的嘗試迄今使用的提取API:
return fetch(file, {
dataType: "text"
})
.then(function(_this) {
return function(data, textStatus, xhr) {
_this.say("Loading file " + file + " complete.");
_this.parse(file, data, onError);
delete _this._pending[loadCount][file];
if (Object.keys(_this._pending[loadCount]).length === 0) {
if (typeof onSuccess === "function") {
return onSuccess.call(void 0, loadCount);
}
}
};
})
.catch(function(_this) {
return function(xhr, textStatus, errorThrown) {
_this.say("Ajax error! " + textStatus + "; " + errorThrown);
if (typeof onError === "function") {
return onError.call(void 0, textStatus, loadCount);
}
};
})
的應用代碼:
var bot = new RiveScript();
bot.loadFile("./brain.rive", loading_done, loading_error);
function loading_done (batch_num) {
console.log("Batch #" + batch_num + " has finished loading!");
bot.sortReplies();
var reply = bot.reply("local-user", "Hello, bot!");
console.log("The bot says: " + reply);
}
function loading_error (error) {
console.log("Error when loading files: " + error);
}
使用Fetch API,我沒有看到任何錯誤現在雖然我也沒有看到任何錯誤或成功消息。
我在這裏錯過了什麼嗎?
從'.then()'返回函數的目的是什麼? – guest271314