javascript - 使用输入字段的值更新 JSON 对象

Question

我创建了一个表来显示和更新 JSON 对象。这是该表中的 2 个字段。我已将 JSON 路径放在名称字段中。

var obj = {
        "subscription": {
            "control-data": [
                "app",
                "sp"
            ],
            "callback-url": "http://core.mbv:18080/man-notify",
            "post-notification": true
        },
        "charging-schedulers": [
            {
                "charging-scheduler-name": "fifteen-days",
            }
        ]
    }

<input type="text" name="subscription%$#^control-data%$#^0" class="inputArea" value="app" size="3">

<input type="text" name="subscription%$#^callback-url" class="inputArea" value="http://core.mbv:18080/man-notify" size="36">

我保留了此路径以用于更新 JSON 对象。我尝试了自己的方式来更新它。但它需要数百个代码。有什么简单的方法可以更新该 JSON 对象。

Answer 1

更新

我注意到您不只是想获取相应的 JSON 值，而是想设置该值。我认为这会更好。 <强> new jsFiddle

obj = {
    "subscription": {
        "control-data": [
            "app",
            "sp"],
            "callback-url": "http://core.mbv:18080/man-notify",
            "post-notification": true
    },
        "charging-schedulers": [{
        "charging-scheduler-name": "fifteen-days",
    }]
}

function updateJSON() {
    var inputs = document.getElementsByTagName("input");
    for (var i = 0; i < inputs.length; i++) {
        var q = inputs[i].name.split("%$#^");
        setValue(obj, q, inputs[i].value);
    }

    // This is the updated JSON obj
    console.log(obj);
}

function setValue(obj, q, val) {
    var sel = q.shift();
    if (typeof obj[sel] === "object" && q.length > 0) {
        setValue(obj[sel], q, val);
    } else {
        obj[sel] = val;
    }
}

HTML

<input type="text" name="subscription%$#^control-data%$#^0" class="inputArea" value="app" size="3">
<input type="text" name="subscription%$#^callback-url" class="inputArea" value="http://core.mbv:18080/man-notify" size="36">
<button id="update" onclick="updateJSON()">Update</button>

---

你可以这样做。我假设您的输入名称对应于 JSON 对象中的结构。 jsFiddle

var obj = {
    "subscription": {
        "control-data": [
            "app",
            "sp"],
            "callback-url": "http://core.mbv:18080/man-notify",
            "post-notification": true
    },
        "charging-schedulers": [{
        "charging-scheduler-name": "fifteen-days",
    }]
}

var inputs = document.getElementsByTagName("input");
for (var i = 0; i < inputs.length; i++) {
    var q= inputs[i].name.split("%$#^");
    var value = getValue(obj, q);

    // This is where you have the value for an input
    console.log("value:", value);
}

function getValue(obj, q) {
    var res = obj[q.shift()];
    if (typeof res === "object" && q.length > 0) {
        return getValue(res, q)
    } else {
        return res
    }
}