JavaScript如何獲取JSON陣列中的所有“名稱”值?
假設以下內容是我們的JSON陣列 -
var details = [ { "customerDetails": [ { "customerName": "John Smith", "customerCountryName": "US" } ] }, { "customerDetails": [ { "customerName": "David Miller", "customerCountryName": "AUS" } ] }, { "customerDetails": [ { "customerName": "Bob Taylor", "customerCountryName": "UK" } ] } ]
要僅獲取CustomerName值,請使用map()概念 -
示例
var details = [ { "customerDetails": [ { "customerName": "John Smith", "customerCountryName": "US" } ] }, { "customerDetails": [ { "customerName": "David Miller", "customerCountryName": "AUS" } ] }, { "customerDetails": [ { "customerName": "Bob Taylor", "customerCountryName": "UK" } ] } ] var allCustomerName = details.map(obj=> obj.customerDetails[0].customerName); console.log(allCustomerName);
要執行上述程式,你需要使用以下命令 -
node fileName.js.
此處我的檔名稱是demo206.js。
輸出
PS C:\Users\Amit\javascript-code> node demo206.js [ 'John Smith', 'David Miller', 'Bob Taylor' ]
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