我有一个如下所示的数据对象：
[
{
"key": "k1204",
"values": [
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{
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{
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{
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{
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]
我需要确保key, values数组的长度相同，以便我可以使用nvd3在stackedAreaChart上绘制它们，因为我需要遵循两个条件...
我试过跟随这个fidde：http://jsfiddle.net/krispo1/nR6qN/2/
在控制器中执行此操作：
get_scn_cst_data().then(function(costByScn){
var data2 = []
for(i = 0; i < costByScn.length; i++) {
console.log("i:", JSON.stringify(costByScn[i].values))
var data = costByScn[i].values;
if(data && Array.isArray(data)) {
console.log("is array")
}
data = data.map(function(series){
series.values = series.values.map(function(d,i){
return [data[2].values[i][0], d[1]]
})
return series;
});
}
console.log("data2: ", JSON.stringify(costByScn));
$scope.data_costByScn = costByScn;
})
但收到此错误：TypeError: data.map is not a function
---- ----- EDIT
进行了更改以修复数组，但现在在此部分的Cannot read property 'values' of undefined处收到此错误：
data = data.map(function(series){
series.values = series.values.map(function(d,i){
return [data[2].values[i][0], d[1]]
})
return series;
});
为什么价值回归未定义？当我控制日志数据时，它看起来是一个values
答案 0 :(得分：2)
只是类型错误意味着你试图在不是数组的东西上调用.map！
在将数据发送到.map之前，请确认它是有效的数组
您可以使用：if(data && Array.isArray(data)) {
// your login goes here...
}