koa-router path parameter acquisition

table of Contents

koa-router path parameter acquisition

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The principle:

     /: Id setting dynamic routing, upon user request, can obtain the dynamic path parameter

Dynamic parameters: ctx.params obtain dynamic routing Router.get (, function () {} 'id / product /')              

Case:

    /**
     * Koa
     * */
    const Koa = require('koa');
    const Router = require('koa-router')();
    const App = new Koa();

    Router.get('/',(ctx,next)=>{
        ctx.body = 'Hello koa';
    });
   
    Router.get('/product/:id',(ctx)=>{
        let ctxId = ctx.params;
        ctx.body ={
            ctxId
        }
    })
    App.use(Router.routes());
    App.use(Router.allowedMethods());
    App.listen(3000,()=>{
        console.log('quick start at port 3000');
    });

Visit the following links: http: // localhost: 3000 / product / 88

Returns the result: { "ctxId": { "id": "88"}}