如何將物件陣列中的特定鍵定位為for回圈內的條件？

JS新手！試圖為我的物件中的一個鍵指定一個陳述句，該物件再次嵌套在一個陣列中。在 Slowbro 旁邊 - 應該顯示訊息：“哇，這是一個大口袋妖怪”，但這不起作用。我試圖在我的 for 回圈中為所有口袋妖怪寫一個一般條件，但也指定“哇，這是一個大口袋妖怪”訊息應該只出現在 Slowbro 而不是任何滿足高度> 1.5 標準的人。我錯過了什么？

//Array contains Pokemon data to display in application
//Each object represents one Pokemon with respective properties
let pokemonList = [
        {name:'Pikachu', height: 0.4, type:['electric','ground','steel','flying']},
        {name:'Charmeleon', height: 1.1, type:['ground','rock', 'water']},
        {name: 'Slowbro' ,height: 1.6, type:['electric', 'grass','dragon','ghost','bug']}
      ];

//Loop lists each Pokemon in array by assigning name and height keys 
for (let i=0; i < pokemonList.length; i  ) 
  { document.write(pokemonList[i].name  ' (height: '   pokemonList[i].height   ') '   '<br>')
  }



for (let i=0; i < pokemonList[i].length; i  ) {
  if (pokemonList[i].height > 1.5 && pokemonList[i].name === 'Slowbro') {
    console.log('- Wow, this is a big Pokemon!');
    } else if (pokemonList[i].height > 0.5 && pokemonList[i].height < 1.5) {
    console.log('- This is an average size Pokemon.');
    } else {
    console.log('- This is a small Pokemon.')
    }
}

uj5u.com熱心網友回復：

試試這個

//Array contains Pokemon data to display in application
//Each object represents one Pokemon with respective properties
let pokemonList = [
        {name:'Pikachu', height: 0.4, type:['electric','ground','steel','flying']},
        {name:'Charmeleon', height: 1.1, type:['ground','rock', 'water']},
        {name: 'Slowbro' ,height: 1.6, type:['electric', 'grass','dragon','ghost','bug']}
      ];

const html = pokemonList.map(({name, height}) => {
   return `${name} (height: ${height})`
}).join('<br>')

document.write(html)

pokemonList.forEach(({name, height}) => {
  if( height > 1.5){
    console.log('- Wow, this is a big Pokemon!')
  }else if(height > 0.5){
    console.log('- This is an average size Pokemon.');
  } else {
    console.log('- This is a small Pokemon.')
  }
})

uj5u.com熱心網友回復：

在代碼片段的最后一個for回圈中，您使用的是陣列第一個元素的長度，而不是陣列的長度：

for (let i=0; i < pokemonList[a].length; i  )

您可能想要陣列本身的長度：

for (let i=0; i < pokemonList.length; i  )

反而。

//Array contains Pokemon data to display in application
//Each object represents one Pokemon with respective properties
let pokemonList = [
        {name:'Pikachu', height: 0.4, type:['electric','ground','steel','flying']},
        {name:'Charmeleon', height: 1.1, type:['ground','rock', 'water']},
        {name: 'Slowbro' ,height: 1.6, type:['electric', 'grass','dragon','ghost','bug']}
      ];

//Loop lists each Pokemon in array by assigning name and height keys 
for (let i=0; i < pokemonList.length; i  ) 
  { document.write(pokemonList[i].name  ' (height: '   pokemonList[i].height   ') '   '<br>')
  }



for (let i=0; i < pokemonList.length; i  ) {
  if (pokemonList[i].height > 1.5 && pokemonList[i].name === 'Slowbro') {
    console.log('- Wow, this is a big Pokemon!');
    } else if (pokemonList[i].height > 0.5 && pokemonList[i].height < 1.5) {
    console.log('- This is an average size Pokemon.');
    } else {
    console.log('- This is a small Pokemon.')
    }
}

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