javascript - 从 json 数组中迭代和删除

Question

我有一个对象，我想从中删除元素。

例如:我的对象如下所示

var DecisionObj = '{"Decision":[{"recid":"1183","reason":"Approved but with different Funding Amount","decision":"Approved","approvalamt":"","comment":""},{"recid":"662","reason":"Approved but with different Funding Amount","decision":"Approved","approvalamt":"","comment":""},{"recid":"752","reason":"Approved but with different Funding Amount","decision":"Approved","approvalamt":"","comment":""}]}';

假设我想删除 recid = 662 的行

下面是我尝试过的代码

var DecisionObj = '{"Decision":[{"recid":"1183","reason":"Approved but with different Funding Amount","decision":"Approved","approvalamt":"","comment":""},{"recid":"662","reason":"Approved but with different Funding Amount","decision":"Approved","approvalamt":"","comment":""},{"recid":"752","reason":"Approved but with different Funding Amount","decision":"Approved","approvalamt":"","comment":""}]}';
obj = JSON.parse(DecisionObj);
console.log("BEFORE==="+JSON.stringify(obj));
var ddcnt = obj.Decision.length;
var recval = 662;
for (e = 0; e < ddcnt; e++) 
{
     //var DRecVal = obj.Decision[e].recid;
     var DRecVal = obj.Decision[e].recid;
     if(recval == DRecVal)
     { 
       obj.Decision.splice(e,1);
     }
}
console.log("AFTER==="+JSON.stringify(obj));

但是上面的代码给了我一个类似 TypeError 的错误: obj.Decision[e] 在第 21 行未定义。

我该如何解决这个问题。感谢帮助!谢谢!

Answer 1

只需添加一个

break;

在循环中调用 splice() 之后。