我有一个像这样的 JSON 数组:
[{"Name":"Bob", "EmployeeID":1234, "StartDate":"12/01/2011"},
{"Name":"Jim", "EmployeeID":4432, "StartDate":"01/12/1997"},
{"Name":"Heather", "EmployeeID":6643, "StartDate":"07/09/2010"}]
我如何使用 Javascript 通过 EmployeeID (4432) 搜索查找和检索 Jim 的记录?
最佳答案
您可以使用过滤器
:
var records = [{"Name":"Bob", "EmployeeID":1234, "StartDate":"12/01/2011"},
{"Name":"Jim", "EmployeeID":4432, "StartDate":"01/12/1997"},
{"Name":"Heather", "EmployeeID":6643, "StartDate":"07/09/2010"}];
var result = records.filter(function(r) { return r["EmployeeID"] == 4432 })[0]||'No record found';
搜索功能可以实现如下:
function findByEmployeeId(records, employeeId) {
return records.filter(function(r) { return r["EmployeeID"] == employeeId })[0]||null;
}
一般来说,如果您对数据有任何控制权,我会建议更改结构以使您的生活更轻松。如果使用以下结构,则可以使用 records[employeeId]
直接访问记录:
{ "1234" : {"Name":"Bob", "EmployeeID":1234, "StartDate":"12/01/2011"},
"4432" : {"Name":"Jim", "EmployeeID":4432, "StartDate":"01/12/1997"},
"6643" : {"Name":"Heather", "EmployeeID":6643, "StartDate":"07/09/2010"} }
关于Javascript 从 JSON 数组中提取特定记录,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/27114097/