用動態數據創建圓環圖c3.js

Question

我不明白這個sytax錯誤不知道我在這裏可能會做錯什麼

SyntaxError：missing;之前的聲明

爲什麼我需要一個;在聲明不是這些假設結束語句之前？

這裏是JS小提琴 https://jsfiddle.net/n5v84svm/10/

我的代碼

checkIt(data){ 
var countriesByName = d3.nest() 
.key(function(d) { return d.Country_Names; }) 
.entries(data); 

    console.log(countriesByName) 

function makePie(){ 
    var chart = c3.generate({ 
    data: { 
     columns: [ 
      function(m) { 
      var obj = []; 
      for (var i in m) { 
      obj.push('Road ' + m.countriesByName[i].key.values.Food and tobacco); 
      } 
     return obj; 
} 
     ], 
     type : 'donut' 
    } 
}); 
} 
    makePie(); 
}; 




d3.json("https://gist.githubusercontent.com/heenaI/cbbc5c5f49994f174376/raw/82cd19eff7db367193cf8ce00144a40ea8d140ac/data.json", checkIt); 

我的數據集看起來像這樣（完整的數據集可以在小提琴可見）

[ 
    { 
     "Continent": "Europe", 
     "Country_Names": "Albania", 
     "Total": "3.8", 
     "Change_total": "-38.7", 
     "Main activity electricity and heat production": "0.1", 
     "Main activity electricity plants": "", 
     "Main activity CHP plants": "", 
     "Unallocated autoproducers/Other energy industry own use": "0.1", 
     "Other": "1.4", 
     "Manufacturing industries and construction": "1", 
     "Iron and steel": "0", 
     "Chemical and petrochemical": "0", 
     "Machinery": "", 
     "Mining and quarrying": "", 
     "Food and tobacco": "0.1", 
     "Paper, pulp and printing": "", 
     "Construction": "0", 
     "Transport": "2.2", 
     "Road": "2.2", 
     "Domestic aviation": "", 
     "Rail": "0", 
     "Domestic navigation": "0.1", 
     "Residential": "0.2", 
     "Commercial and public services": "0", 
     "Agriculture/forestry": "0.2", 
     "Sub-bituminous coal/Lignite": "", 
     "Other bituminous coal": "", 
     "Natural gas": "0", 
     "Motor gasoline excl. bio": "0.3", 
     "Gas/diesel oil excl. bio": "2.2" 
    }] 

Answer 1

看起來你只是有一些語法錯誤...

此：

checkIt(data){ 

應該是：

function checkIt(data) { 

這：

obj.push('Road ' + m.countriesByName[i].key.values.Food and tobacco); 

應該是：

obj.push('Road ' + m.countriesByName[i].key.values.Food + ' and tobacco');