英文:
I am trying to access elements of this multidimensional array and getting strange results like : 'o','u'
问题
BestAlbumsByGenre = [];
BestAlbumsByGenre [0] = "Country";
BestAlbumsByGenre [0][0] = "Johnny Cash : Live at Folsom Prison";
BestAlbumsByGenre [0][1] = "Patsy Cline : Sentimentally Yours";
BestAlbumsByGenre [0][2] = "Hank Williams : I'm Blue Inside";
BestAlbumsByGenre [1] = "Rock";
BestAlbumsByGenre [1][0] = "T-Rex : Slider";
BestAlbumsByGenre [1][1] = "Nirvana : Nevermind";
BestAlbumsByGenre [1][2] = "Lou Reed : Transformer";
BestAlbumsByGenre [2] = "Punk";
BestAlbumsByGenre [2][0] = "Flipper : Generic";
BestAlbumsByGenre [2][1] = "The Dead Milkmen";
BestAlbumsByGenre [2][2] = "Patti Smith : Easter";
console.log(BestAlbumsByGenre[0][1]);
英文:
let BestAlbumsByGenre = [];BestAlbumsByGenre [0] = "Country";BestAlbumsByGenre [0][0] = "Johnny Cash : Live at Folsom Prison";BestAlbumsByGenre [0][1] = "Patsy Cline : Sentimentally Yours";BestAlbumsByGenre [0][2] = "Hank Williams : I'm Blue Inside";BestAlbumsByGenre [1] = "Rock";BestAlbumsByGenre [1][0] = "T-Rex : Slider";BestAlbumsByGenre [1][1] = "Nirvana : Nevermind";BestAlbumsByGenre [1][2] = "Lou Reed : Transformer";BestAlbumsByGenre [2] = "Punk";BestAlbumsByGenre [2][0] = "Flipper : Generic";BestAlbumsByGenre [2][1] = "The Dead Milkmen";BestAlbumsByGenre [2][2] = "Patti Smith : Easter";console.log(BestAlbumsByGenre[0][1]);
this is my code.
If I want to access the BestAlbumsByGenre[0][1], it should return "Patsy Cline : Sentimentally Yours";
But it's returning the character 'o', maybe it's returning the 2nd character of 0th element, String "Country", but if it so then why?
thanks in advance.
答案1
得分: 1
在BestAlbumsByGenre [0] = "Country"之后，将一个字符串设置为数组的第0个条目之后，BestAlbumsByGenre [0][0] = "Johnny Cash : Live at Folsom Prison"不再起作用。BestAlbumsByGenre[0][1]返回该字符串的第一个字符。
考虑使用不同的数据结构，例如：
BestAlbumsByGenre[0] = {Genre: "Country", Albums: []};BestAlbumsByGenre[0].Albums[0] = "Johnny Cash : Live at Folsom Prison";
英文:
After BestAlbumsByGenre [0] = "Country", which sets a string as 0th entry in the array, BestAlbumsByGenre [0][0] = "Johnny Cash : Live at Folsom Prison" has no effect any more. BestAlbumsByGenre[0][1] returns the 1st character in that string.
Consider a different data structure, for example:
BestAlbumsByGenre[0] = {Genre: "Country", Albums: []};BestAlbumsByGenre[0].Albums[0] = "Johnny Cash : Live at Folsom Prison";
答案2
得分: 1
我不认为你完全理解JavaScript中的多维数组结构。
这个示例是否能让它们的结构更清晰？
let BestAlbumsByGenre = [];BestAlbumsByGenre[0] = ["Country", // 0 0[ // 0 1"Johnny Cash : Live at Folsom Prison", // 0 1 0"Patsy Cline : Sentimentally Yours", // 0 1 1"Hank Williams : I'm Blue Inside" // 0 1 2]]; //等等...console.log(BestAlbumsByGenre[0][0]); //Countryconsole.log(BestAlbumsByGenre[0][1][1]); //Patsy Cline : Sentimentally Yours
英文:
I don't think you understand multidimensional array structures in javascript at all.
Does this example make their structure clearer?
let BestAlbumsByGenre = [];BestAlbumsByGenre[0] = ["Country", // 0 0[ // 0 1"Johnny Cash : Live at Folsom Prison", // 0 1 0"Patsy Cline : Sentimentally Yours", // 0 1 1"Hank Williams : I'm Blue Inside" // 0 1 2]]; //etc...console.log(BestAlbumsByGenre[0][0]); //Countryconsole.log(BestAlbumsByGenre[0][1][1]); //Patsy Cline : Sentimentally Yours
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论