JSON：如何添加到没有键的字段？

Question

I have a simple JSON object

simple_chart_config = {
    chart: {
        container: "#tree-simple"
    },

    nodeStructure: {
        text: { name: "Question" },
        children: [
        {
            text: { name: "Answer 1" }
        }
        ]
    }
};

And I'd like to add a new subfield within the first entry on the children array so that the final output is

simple_chart_config = {
    chart: {
        container: "#tree-simple"
    },

    nodeStructure: {
        text: { name: "Question" },
        children: [
        {
            text: { name: "Answer 1" },
            children: [
            {
                text: { name: "Question 2" }
            }
            ]
        }
        ]
    }
};

I've tried several methods, such as

var questionTwoStr = '{"children": [{"text": { "name": "Question 2" }}]}'
var questionTwo = JSON.parse(questionTwoStr);
simple_chart_config.nodeStructure.children[0] = questionTwo;

but I'm having issues working out all of the nested indexes in my head. This is for a tree in treant.js if that context is helpful at all.

I think I'm mostly confused because the place I'm trying to add the new subfield doesn't have a key, which I thought was required for JSON.

Answer 1

There's no need to use JSON here; you can add the object itself: simple_chart_config.nodeStructure.children[0].children = [{text: { name:"Question 2" }}];