如何将数组用作反应选择组件的选项 [英] How to use an array as option for react select component

问题描述

如果我想替换选项

<option value="A">Apple</option>
<option value="B">Banana</option>

在给定示例中，通过在React jsx文件中使用数组，我将如何进行?

in given example by use of an array in a react jsx file,how would i proceed ?

<select value="B">
    <option value="A">Apple</option>
    <option value="B">Banana</option>
</select>

最诚挚的问候

蓝色

推荐答案

因为它只是JavaScript，所以有上百万种方法.我通常采用的方式是映射容器以生成胆量. for循环或其他方法也可以正常工作.

Because it's just javascript, there are a million ways. The way I usually take is to map the container to generate the guts. A for loop or whatever would also work just fine.

const Answer = react.createClass({

    render: function() {

        var Data     = ['this', 'example', 'isnt', 'funny'],
            MakeItem = function(X) {
                return <option>{X}</option>;
            };


        return <select>{Data.map(MakeItem)}</select>;

    }

};

或者在es6中，您可以做出更现代的反应

Or in es6 in more modern react you can just

var Answer = props => 
    <select>{props.data.map((x,y) => <option key={y}>{x}</option>)}</select>;

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