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我想在 Angular 2 应用程序中使用“fast-json-patch”库( https://github.com/Starcounter-Jack/JSON-Patch )。

我试过添加:

'fast-json-patch': 'vendor/fast-json-patch/dist/json-patch-duplex.min.js'

在下的system-config.ts文件中,map但导入时不起作用fast-json-patch

4

2 回答 2

19

1)安装包

npm install fast-json-patch --save

2)在要使用ist的组件中,导入需要的函数:

import { compare } from 'fast-json-patch';

3)创建补丁比较旧对象和新对象:

const patch = compare(oldObj, modifiedObj);

4) 打印结果:

console.log(patch);

0:{op: "replace", path: "/firmendetails/registergericht", value: "Darmstadt xx"}
1:{op: "remove", path: "/firmendetails/handelsname"}
2:{op: "remove", path: "/firmendetails/firma"}
3:{op: "remove", path: "/firmendetails/rechtsform"}
于 2018-08-22T08:46:32.483 回答
-4

这是我的system-config.ts文件的样子:

    import * as express from 'express';
    import {ng2engine} from 'angular2-universal-preview';

    // Angular 2
    import {App} from './src/app';

    let app = express();

    // Express View
    app.engine('.ng2.html', ng2engine);
    app.set('views', __dirname);
    app.set('view engine', 'ng2.html');


    // static files
    app.use(express.static(__dirname));


    app.use('/', (req, res) => {
      res.render('index', { App });
    });



    app.listen(3000, () => {
      console.log('Listen on http://localhost:3000');
    });

请添加您的代码,以便我看一下?

于 2016-06-19T07:49:13.323 回答