[英]JavaScript Classes and Modules in NodeJS
我很难理解如何将单独的.js文件导入到index.js节点文件中。
我创建了一个文件pokemon.js,如下所示:
var pokemon = (function(){
function Pokemon(name) {
this.name = name;
console.log("pokemon");
}
})();
module.exports.Pokemon = pokemon;
现在在我的index.js中,我想使用它:
var Pokemon = require('./models/pokemon.js');
//如何调用Pokemon函数?
更新 :
var Pokemon = require('./models/models.js');
var app = express();
var pokemons = [];
app.get("/pokemon/all",function(req,res){
var pokemon = Pokemon("Pikachu"); // Pokemon is not a function
})
这是我找到的解决方案:
models.js:
module.exports = function(name) {
this.name = name;
}
index.js:
var Pokemon = require('./models/models.js');
var app = express();
var pokemons = [];
app.get("/pokemon/all",function(req,res){
var pokemon = new Pokemon('Pikachu');
pokemons.push(pokemon);
res.json(pokemons);
})
我看到您要导出对象构造函数。
pokemon.js
function Pokemon(name){
this.name = name;
console.log(this.name);
}
// if any prototype
Pokemon.prototype.serviceOne = function(){ };
Pokemon.prototype.serviceTwo = function(){ };
module.exports = Pokemon;
index.js
var Pokemon = require('path/to/pokemon');
app.get("/pokemon/all",function(req,res){
var pikachu= new Pokemon("Pikachu");
pikachu.serviceOne();
pikachu.serviceTwo();
})
@catta提供的只是有一个小错误尝试:
var pokemon = function(name) {
this.name = name;
console.log("pokemon");
}
module.exports.Pokemon = pokemon;
在index.js中
var Pokemon = require('./models.js');
Pokemon.Pokemon('name') //output name
pokemon.js
var pokemon = function(str){
this.name = str;
console.log(this.name);
};
module.exports.Pokemon = pokemon;
main.js
var Pokemon = require('./models/models.js');
var app = express();
var pokemons = [];
app.get("/pokemon/all",function(req,res){
pokemons.push(Pokemon.Pokemon("Pikachu"));
})
当您将var key设置为要求时,仅引用该文件。 因此,您需要“ Pokemon.Pokemon()”
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