jquery - $.when 是否按照数组中的顺序解析延迟数组？

Question

我有一个未知数量的延迟数组，我正在尝试使用 $.when 来解决它。当所有延迟都已解决后，“.then”函数是否会按照我在数组中输入的顺序返回已解决的延迟？

伪代码示例:

var deferreds = [];
for(0,1,2,...,x) { 
   var def = JsonRpc(...);
   deferreds.push(def);
}
$.when.apply($, deferreds).then(function () {
  console.log(arguments.length); //outputs a number >= 0
  for(0,1,2,...,x) {
     console.log("Defered: ", arguments[0,1,2,...,x])
  }
});

deferreds[0] 是否等于arguments[0]，deferreds[x] 是否等于arguments[x]？

预先感谢您的所有回复!//艾德文

Answer 1

根据文档:

The arguments passed to the doneCallbacks provide the resolved values for each of the Deferreds, and matches the order the Deferreds were passed to jQuery.when(). For example:

var d1 = $.Deferred();
var d2 = $.Deferred();

$.when( d1, d2 ).done(function ( v1, v2 ) {
    console.log( v1 ); // "Fish"
    console.log( v2 ); // "Pizza"
});

d1.resolve( "Fish" );
d2.resolve( "Pizza" );

一个小例子:

var deferreds = [];
for (var i = 0; i < 3; i++) {
  var def = $.Deferred();
  deferreds.push(def);
}

$.when.apply($, deferreds).then(function() {
  console.log(arguments.length); //outputs a number >= 0
  for (var i = 0; i < 3; i++) {
    console.log("Defered: ", arguments[i]);
  }
});

deferreds[1].resolve("Fish2");
deferreds[2].resolve("Fish3");
deferreds[0].resolve("Fish1");

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>