如何在IE 11中实现传播算子?

本文介绍了如何在IE 11中实现传播算子?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

对于某些"提取"，操作我试图在不使用传播运算符的情况下获得以下代码段工作，因为IE 11不了解传播运算符.

For some "extraction" operation I am trying to get the following snippet work, without using the spread operator, because IE 11 doesn't knows about spread operators.

可在Chrome中运行，但不能在IE 11中运行:

html_col_width =[{"targets":0, "width":50}, {"targets":1, "width":100},{"targets":2, "width":442}]

        ... some other code
        order: [
            [response.order_by_column, response.order_by]
        ],
        columnDefs: [
                      ...html_col_width,
                      {other: stuff},
                      {other: stuff}
    })

请参见列Defs:... html_col_width

在没有传播运算符的情况下如何实现以下目标:

How can I achieve the following without the spread operator:

columnDefs: [
          {"targets":0, "width":50},
          {"targets":1, "width":100},
          {"targets":2, "width":442},
          {other: stuff},
          {other: stuff}
    })

我已经阅读并尝试了以下操作，但是如果对象数组包含2个键，则此操作不起作用:中的Spread Operator等效.提供的链接上的内容是关于合并的不同对象，这使问题大为不同.

I have read and tried the following, but this is not working if the array of objects contains 2 keys: Spread Operator equivalent in IE - Javascript. The content at the provided link is about merging different objects, which makes the question rather different.

What you are using is called "Array Destructuring": https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment

正如您所说，它在IE中不起作用，这是因为它是ES6的一部分，并且(永远不会)在IE 11中不受支持.

As you said, it doesn´t work in IE, and that is because it´s part of ES6 and that is not (and never will) supported in IE 11.

解决该问题的一种方法是使用Babel这样的编译器.

One option to solve it is using transpilers like Babel.

其他选项是定义自己的功能:

Other option, is to define your own function:

var __spreadArrays = (this && this.__spreadArrays) || function () {
for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;
for (var r = Array(s), k = 0, i = 0; i < il; i++)
    for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)
        r[k] = a[j];
return r;

};

var html_col_width = [{ "targets": 0, "width": 50 }, { "targets": 1, "width": 100 }, { "targets": 2, "width": 442 }];
var columnDefs = __spreadArrays(html_col_width, [{ other: 'stuff' }, { other: 'stuff' }]);

这篇关于如何在IE 11中实现传播算子?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

operators

如何在IE 11中实现传播算子?

问题描述

推荐答案