Question

1）如果我尝试在Chrome中以调试模式运行，则会跳过此AJAX函数 2）当我正常运行时，AJAX工作，我得到长度为64的数组输出到控制台。但是在AJAX调用之后，相同的数组变空，长度变为0

我甚至尝试使用$(document).ready代替$("#nextQ").click(function(){

$("#nextQ").click(function(){ 

var Quotes = [];
var ID = [];
var Tag = [];
var seen = [];
//Get quotes from JSON file
  $.ajax({
                url: '../facts.json',
                datatype: 'json',
                type: 'get',
                success: function(data){
                                 console.log(data);
                                    console.log("successfully imported the JSON file");
                                 console.log(data.length); //Used to return 64
                                 totalQ = data.length; 
                                 for (i = 0; i < totalQ; i++){
                                           ID[i] = data[i][0];
                                           Tag[i] = data[i][1];
                                           Quotes[i] = data[i][2];
                                           seen[i] = data[i][3];
                            }
                                console.log(Quotes.length);
                    }
        });


//-----------------------
//This is where it all breaks down..the following totalQ is empty 
//

var Quote = new String;
var qnumber = 0;
var totalQ //The total number of available quotes to choose from
var Qrem //Remaining unseen quotes
var lock = new Boolean; //This will be true if the quote is already seen
var CurrentImage = String;

totalQ = Quotes.length - 1; //This length is returning 0 and totalQ = -1
console.log("TotalQ = " + totalQ);
ChooseQuote(0,totalQ);

Answer 1

尝试更换：

datatype: 'json',

使用：

dataType: 'json',

不要忘记javascript是一种区分大小写的编程语言。您还可以尝试向AJAX调用添加错误处理程序，以查看是否由于某种原因调用它。例如，如果远程端点返回一些无法解析的无效JSON，则会出现错误。

尝试导入JSON文件时跳过$ .ajax函数

1 个答案: