我是ES6 +新手,我目前正在构建React应用,但遇到了一个问题-我试图导入2个对象,但未能这样做。我尝试了各种事情并遇到了错误,当我一次尝试都没有遇到错误时,我尝试.toString()
对象的属性之一的值并得到undefined
的错误。
这是文件结构(忽略不相关的文件):
src
├── index.js
└── style
└── colors.js
colors.js
在哪里:
const primaryColor = {
900: "#001a8f",
800: "#002EA2",
700: "#1238ae",
600: "#1238ae",
500: "#274ac4",
400: "#4e66cd",
300: "#7081d6",
200: "#9aa5e2",
100: "#c3c8ed",
50: "#e7e9f8"
};
primaryColor['main'] = primaryColor[800];
const secondaryColor = {
900: "#3c3c3c",
800: "#606060",
700: "#818181",
600: "#979797",
500: "#c2c2c2",
400: "#dedede",
300: "#f0f0f0",
200: "#f5f5f5",
100: "#fafafa",
50: "#FFFFFF"
};
secondaryColor['main'] = secondaryColor[50];
我不确定export
在这里如何。
在index.js
中,我想同时import
和primaryColor
secondaryColor
。
导出和导入它们的正确/可能方法是什么? 我以为我知道如何导出和导入,但是由于出现错误,我不确定自己做错了什么。
答案 0 :(得分:1)
export const primaryColor = {
900: "#001a8f",
800: "#002EA2",
700: "#1238ae",
600: "#1238ae",
500: "#274ac4",
400: "#4e66cd",
300: "#7081d6",
200: "#9aa5e2",
100: "#c3c8ed",
50: "#e7e9f8"
};
primaryColor['main'] = primaryColor[800];
export const secondaryColor = {
900: "#3c3c3c",
800: "#606060",
700: "#818181",
600: "#979797",
500: "#c2c2c2",
400: "#dedede",
300: "#f0f0f0",
200: "#f5f5f5",
100: "#fafafa",
50: "#FFFFFF"
};
secondaryColor['main'] = secondaryColor[50];
并按如下所示导入
import { primaryColor, seondaryColor } from './style/colors.js'
答案 1 :(得分:0)
您可以从colors.js
文件中导出
export default { primaryColor, seondaryColor };
像这样从index.js
文件中导入它:
import { primaryColor, seondaryColor } from './style/colors.js'
答案 2 :(得分:0)
在您的colors.js
文件中,执行以下操作
const primaryColor = {
900: "#001a8f",
800: "#002EA2",
700: "#1238ae",
600: "#1238ae",
500: "#274ac4",
400: "#4e66cd",
300: "#7081d6",
200: "#9aa5e2",
100: "#c3c8ed",
50: "#e7e9f8"
};
primaryColor['main'] = primaryColor[800];
const secondaryColor = {
900: "#3c3c3c",
800: "#606060",
700: "#818181",
600: "#979797",
500: "#c2c2c2",
400: "#dedede",
300: "#f0f0f0",
200: "#f5f5f5",
100: "#fafafa",
50: "#FFFFFF"
};
secondaryColor['main'] = secondaryColor[50];
export { primaryColor, secondaryColor };
在您的index.js
中,将其像这样使用:
import { primaryColor, secondaryColor } from './style/colors.js';
...
primaryColorMain = primaryColor['main'];
secondaryColorMain = secondaryColor['main'];
希望这会有所帮助!