Javascript-switch-case-reactjs错误?
我有一个类似这样的数据jsonJavascript-switch-case-reactjs错误?,javascript,reactjs,Javascript,Reactjs,我有一个类似这样的数据json var config = [{ "craft-breweries": { "count": 5, "latest": "The Wimbledon Brewery Company Limited", "data": [{ "title": "Belleville Brewing Company", "start": 2013 }, { "title": "Kew Brewery",
var config = [{
"craft-breweries": {
"count": 5,
"latest": "The Wimbledon Brewery Company Limited",
"data": [{
"title": "Belleville Brewing Company",
"start": 2013
}, {
"title": "Kew Brewery",
"start": 2015
}, {
"title": "Laines Brewery (Four Thieves)",
"start": 2015
}, {
"title": "Sultan Brewery",
"start": 2015
}, {
"title": "The Wimbledon Brewery Company Limited",
"start": 2015
}]
},
"farmer-markets": {
"count": 5
},
"pie-markets": {
"count": 8
}
}];
--如果密钥存在,我将尝试动态附加组件
因此调用了一个名为getLayers的函数。它在json中循环——但是开关大小写似乎满足循环的键
类似案例:“农民市场”
中国的“农贸市场”和“馅饼市场”?是因为开关盒不喜欢炒作吗
getLayers: function(data){
var items = [];
var j = 0;
for (var layer in data) {
console.log("layer------->", layer);
switch (layer) {
case 'craft-breweries':
console.log("craft-breweries");
items.push(<CraftBreweries key={j} config={config[0]["craft-breweries"]} />);
case 'farmer-markets':
console.log("farmer-markets");
items.push(<FarmerMarket key={j} config={config[0]["farmer-markets"]} />);
case 'pie-markets':
console.log("pie-markets");
items.push(<PieMarket key={j} config={config[0]["pie-markets"]} />);
}
console.log("j", j);
j++;
}
console.log("items", items);
return items;
}
getLayers:函数(数据){
var项目=[];
var j=0;
用于(数据中的var层){
console.log(“层------->”,层);
交换机(层){
案例“手工酿酒厂”:
控制台日志(“工艺酿酒厂”);
items.push();
“农贸市场”案例:
console.log(“农贸市场”);
items.push();
“馅饼市场”案例:
console.log(“馅饼市场”);
items.push();
}
console.log(“j”,j);
j++;
}
控制台日志(“项目”,项目);
退货项目;
}
整块
import React from 'react';
import ReactDOM from 'react-dom';
//import App from './App';
import './index.css';
var config = [{
"craft-breweries": {
"count": 5,
"latest": "The Wimbledon Brewery Company Limited",
"data": [{
"title": "Belleville Brewing Company",
"start": 2013
}, {
"title": "Kew Brewery",
"start": 2015
}, {
"title": "Laines Brewery (Four Thieves)",
"start": 2015
}, {
"title": "Sultan Brewery",
"start": 2015
}, {
"title": "The Wimbledon Brewery Company Limited",
"start": 2015
}]
},
"farmer-markets": {
"count": 5
},
"pie-markets": {
"count": 8
}
}];
var MultipleComponents = React.createClass({
getLayers: function(data){
var items = [];
var j = 0;
for (var layer in data) {
console.log("layer------->", layer);
switch (layer) {
case 'craft-breweries':
console.log("craftbreweries");
items.push(<CraftBreweries key={j} config={config[0]["craft-breweries"]} />);
case 'farmer-markets':
console.log("farmermarkets");
items.push(<FarmerMarket key={j} config={config[0]["farmer-markets"]} />);
case 'pie-markets':
console.log("piemarkets");
items.push(<PieMarket key={j} config={config[0]["pie-markets"]} />);
default:
}
console.log("j", j);
j++;
}
console.log("items", items);
return items;
},
render: function () {
var config = this.props.config;
console.log("config", config);
return (
<div className="apps">
{this.getLayers(config[0])}
</div>
);
}
});
var CraftBreweries = React.createClass({
componentDidMount: function () {
//var $this = $(ReactDOM.findDOMNode(this));
console.log("rendered div now engage d3");
// set el height and width etc.
},
render: function () {
var props = this.props.config;
return (
<div className="craftbreweries" data-role="craftbreweries">
You have {props.count} number of breweries in your area. The latest one is {props.latest}.
</div>
);
}
});
var FarmerMarket = React.createClass({
componentDidMount: function () {
//var $this = $(ReactDOM.findDOMNode(this));
console.log("rendered div now engage d3");
// set el height and width etc.
},
render: function () {
var props = this.props.config;
return (
<div className="farmermarket" data-role="farmermarket">
You have {props.count} number of farmer markets in your area.
</div>
);
}
});
var PieMarket = React.createClass({
componentDidMount: function () {
//var $this = $(ReactDOM.findDOMNode(this));
console.log("rendered div now engage d3");
// set el height and width etc.
},
render: function () {
var props = this.props.config;
return (
<div className="piemarket" data-role="piemarket">
You have {props.count} number of pie markets in your area.
</div>
);
}
});
ReactDOM.render(
<MultipleComponents config={config} />,
document.getElementById('root')
);
从“React”导入React;
从“react dom”导入react dom;
//从“./App”导入应用程序;
导入“./index.css”;
变量配置=[{
“手工酿酒厂”:{
“计数”:5,
“最新”:“温布尔登啤酒厂有限公司”,
“数据”:[{
“名称”:“贝尔维尔酿酒公司”,
“启动”:2013年
}, {
“名称”:“丘酿酒厂”,
“启动”:2015年
}, {
“头衔”:“莱恩啤酒厂(四贼)”,
“启动”:2015年
}, {
“头衔”:“苏丹啤酒厂”,
“启动”:2015年
}, {
“头衔”:“温布尔登啤酒厂有限公司”,
“启动”:2015年
}]
},
“农贸市场”:{
“计数”:5
},
“馅饼市场”:{
“计数”:8
}
}];
var MultipleComponents=React.createClass({
getLayers:函数(数据){
var项目=[];
var j=0;
用于(数据中的var层){
console.log(“层------->”,层);
交换机(层){
案例“手工酿酒厂”:
控制台日志(“工艺酿酒厂”);
items.push();
“农贸市场”案例:
console.log(“农贸市场”);
items.push();
“馅饼市场”案例:
控制台日志(“piemarkets”);
items.push();
违约:
}
console.log(“j”,j);
j++;
}
控制台日志(“项目”,项目);
退货项目;
},
渲染:函数(){
var config=this.props.config;
log(“config”,config);
返回(
{this.getLayers(配置[0])}
);
}
});
var CraftBreweries=React.createClass({
componentDidMount:函数(){
//var$this=$(ReactDOM.findDOMNode(this));
console.log(“呈现的div现在接合d3”);
//设置el高度和宽度等。
},
渲染:函数(){
var props=this.props.config;
返回(
你所在地区有{props.count}家啤酒厂。最近的一家是{props.latest}。
);
}
});
var FarmerMarket=React.createClass({
componentDidMount:函数(){
//var$this=$(ReactDOM.findDOMNode(this));
console.log(“呈现的div现在接合d3”);
//设置el高度和宽度等。
},
渲染:函数(){
var props=this.props.config;
返回(
你所在地区有{props.count}个农贸市场。
);
}
});
var PieMarket=React.createClass({
componentDidMount:函数(){
//var$this=$(ReactDOM.findDOMNode(this));
console.log(“呈现的div现在接合d3”);
//设置el高度和宽度等。
},
渲染:函数(){
var props=this.props.config;
返回(
你所在地区有{props.count}个馅饼市场。
);
}
});
ReactDOM.render(
,
document.getElementById('root'))
);
您缺少“break”语句。switch case不是if-else功能,它将继续,直到找到中断或结束。至于你的例子,它将进入“农贸市场”,由于没有中断声明,它也将继续进入“馅饼市场”。您的开关盒应为:
getLayers: function(data){
var items = [];
var j = 0;
for (var layer in data) {
console.log("layer------->", layer);
switch (layer) {
case 'craft-breweries':
console.log("craft-breweries");
items.push(<CraftBreweries key={j} config={config[0]["craft-breweries"]} />);
break;
case 'farmer-markets':
console.log("farmer-markets");
items.push(<FarmerMarket key={j} config={config[0]["farmer-markets"]} />);
break;
case 'pie-markets':
console.log("pie-markets");
items.push(<PieMarket key={j} config={config[0]["pie-markets"]} />);
break;
default:
console.log("no matches found for layer:", layer);
break;
}
console.log("j", j);
j++;
}
console.log("items", items);
return items;
}
getLayers:函数(数据){
var项目=[];
var j=0;
用于(数据中的var层){
console.log(“层------->”,层);
交换机(层){
案例“手工酿酒厂”:
控制台日志(“工艺酿酒厂”);
items.push();
打破
“农贸市场”案例:
console.log(“农贸市场”);
items.push();
打破
“馅饼市场”案例:
console.log(“馅饼市场”);
items.push();
打破
违约:
log(“未找到层:,层的匹配项”);
打破
}
console.log(“j”,j);
j++;
}
控制台日志(“项目”,项目);
退货项目;
}
您缺少“break”语句。switch case不是if-else功能,它将继续,直到找到中断或结束。至于你的例子,它将进入“农贸市场”,由于没有中断声明,它也将继续进入“馅饼市场”。您的开关盒应为:
getLayers: function(data){
var items = [];
var j = 0;
for (var layer in data) {
console.log("layer------->", layer);
switch (layer) {
case 'craft-breweries':
console.log("craft-breweries");
items.push(<CraftBreweries key={j} config={config[0]["craft-breweries"]} />);
break;
case 'farmer-markets':
console.log("farmer-markets");
items.push(<FarmerMarket key={j} config={config[0]["farmer-markets"]} />);
break;
case 'pie-markets':
console.log("pie-markets");
items.push(<PieMarket key={j} config={config[0]["pie-markets"]} />);
break;
default:
console.log("no matches found for layer:", layer);
break;
}
console.log("j", j);
j++;
}
console.log("items", items);
return items;
}
getLayers:函数(数据){
var项目=[];
var j=0;
用于(数据中的var层){
console.log(“层------->”,层);
交换机(层){
案例“手工酿酒厂”:
控制台日志(“工艺酿酒厂”);
items.push();
打破
“农贸市场”案例:
console.log(“农贸市场”);
items.push();
打破
“馅饼市场”案例:
console.log(“馅饼市场”);
items.push();
打破
违约:
log(“未找到层:,层的匹配项”);
打破
}