[英]Get unkown children of node from a JSONPath in Javascript
我目前正在構建一個工具,該工具應該提取 URL 的核心 Web Vitals 指標。
使用 API 我可以收到一個 JSON object 我可以使用 JSONPath 訪問。
我想使用 forEach 循環將數據輸入到 HTML 字段中。
現在我的問題是,如何在不使用名稱的情況下訪問 JSON 的子節點。
document.querySelectorAll('[data-section^="cww"]').forEach((nodes, index) => {
console.log(values.body.record.metrics);
});
{
"key": {
"origin": "https://developer.mozilla.org"
},
"metrics": {
"cumulative_layout_shift": {
"histogram": [
{
"start": "0.00",
"end": "0.10",
"density": 0.9377813344003197
},
{
"start": "0.10",
"end": "0.25",
"density": 0.039611883565069506
},
{
"start": "0.25",
"density": 0.022606782034610366
}
],
"percentiles": {
"p75": "0.01"
}
},
"first_contentful_paint": {
"histogram": [
{
"start": 0,
"end": 1800,
"density": 0.9419767907162874
},
{
"start": 1800,
"end": 3000,
"density": 0.03741496598639458
},
{
"start": 3000,
"density": 0.02060824329731889
}
],
"percentiles": {
"p75": 841
}
},
"first_input_delay": {
"histogram": [
{
"start": 0,
"end": 100,
"density": 0.9863863863863849
},
{
"start": 100,
"end": 300,
"density": 0.008308308308308296
},
{
"start": 300,
"density": 0.0053053053053052955
}
],
"percentiles": {
"p75": 5
}
},
"largest_contentful_paint": {
"histogram": [
{
"start": 0,
"end": 2500,
"density": 0.9460068054443531
},
{
"start": 2500,
"end": 4000,
"density": 0.03467774219375491
},
{
"start": 4000,
"density": 0.019315452361889692
}
],
"percentiles": {
"p75": 1135
}
}
}
}
嘗試這個
var p75s = [];
Object.keys(data.metrics).forEach(function (key) {
p75s.push(data.metrics[key].percentiles.p75);
});
output
["0.01",841,5,1135]
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