Question

我有这样的数组urls = ['url1','url2','url3'];我如何跟踪数组索引，所以在每次Ajax调用时我都可以删除一个元素。

这是我正在尝试的事情

＆＃13;

var my_delay = 2000;
var urls = ['url1','url2','url3'];


$(function() {
    callAjax();
});


function callAjax() {
    /*$.ajax({
         // my ajax params ..............
        success: function(data){
        		if(urls.length != 0){
                  console.log('must be called only 3 times');
        		  setTimeout(callAjax, my_delay);
                   urls.shift();
        		}
        }
    }); */
  console.log('must be called only 3 times');
  console.log('in real situation i will going to use above commented ajax code');
 if(urls.length != 0){  // stop here but you are not stoppping why?
 setTimeout(callAjax, my_delay);
   urls.shift(); 
   } // end of if
}

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>

＆＃13;

问题我希望在urls[]中没有元素时停止ajax调用请注意ajax将调用php page方案我也希望跟踪array index

Answer 1

使用全局变量和递归函数

var i = 0;
callAjax(urls[i]);
function callAjax(url) {
 $.ajax({
 url:url,
 success:function() {
if (i< urls.length)
   i++;
   callAjax(urls[i]);
 }
});
}

Answer 2

试试吧 $（function（）{

    var urls = ['url1','url2','url3'],

    function callAjax(url) {
        alert(url);
    }

    // for each array element call function callAjax
    $.each( urls, function( i, url ) {
      callAjax(url);
    });

});

Answer 3

也许您需要这样：$.when() 1.5

中添加了jquery

http://devdocs.io/jquery/jquery.when

这样，在所有Ajax完成之后，你将得到array结果保持之前的轨迹。

如何在ajax调用期间跟踪数组索引

3 个答案: