如何把Json数据放入一个变量Angular 2中？

在params.value，我有3个数组，其中我需要将名称放在一个变量中。我试图通过ForEach来做，但我做不到，怎么了？

var roles = params.forEach(x => params.value.Name); 
return roles; 

{"Object":[{"TerritoryId":1,"TerritoryName":"Russia","FirmPieRotationRuleId":1,"FirmPieWorkedYears":0,"FirmPieCoolOff":5,"FirmPieRoles":[{"TeamRoleId":1,"Name":"Engagement Leader","MinCount":1,"MaxCount":1,"SortOrder":0},{"TeamRoleId":2,"Name":"Signing Partner","MinCount":1,"MaxCount":1,"SortOrder":0},{"TeamRoleId":3,"Name":"Engagement Manager","MinCount":1,"MaxCount":1,"SortOrder":0}],"StatutoryPieRotationRuleId":null,"StatutoryPieWorkedYears":null,"StatutoryPieCoolOff":null,"StatutoryPieRoles":[],"NonPieRotationRuleId":null,"NonPieWorkedYears":null,"NonPieCoolOff":null,"NonPieRoles":[]}],"Code":0,"ErrorMessage":null,"Errors":[]}

来源

2017-07-14 Valitskiy Dmitriy

Array#forEach不返回任何东西。改为尝试Array#map。

var roles = params.map(x => params.value.Name);

来源

2017-07-14 09:17:42

我有错误“params.map不是函数”虽然我使用了“import”rxjs/Rx';“ –

@ValitskiyDmitriy'params'变量来自异步请求？ –

不，没有这样的要求。这是一个表格，它与来自服务器的响应一起工作。对于右扬声器，它需要你需要 –

value是数组。试试这个：

var roles = params.value.map(val => val.Name)

来源

2017-07-14 15:21:24 Rodris

如何把Json数据放入一个变量Angular 2中？

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