false（默认） 以下划线形式返回数据 true 以驼峰形式返回数据
加载数据
This function uses the PerformanceNavigationTiming API to get page load time data.
The PerformanceNavigationTiming API provides more accurate and detailed information about page load time than the deprecated PerformanceTiming API.
If you are using an older browser that does not support PerformanceNavigationTiming, you can still use the PerformanceTiming API by using the previous version of this library (v3.9.7).
Usage:
// `camelCase：false` (Default) Return underline(`a_b`) data.
// `camelCase：true` Return hump(`aB`) data.
getPerformance()
.then(res => {
console.log(JSON.stringify(res));
})
.catch(console.error);
Output:
{"source":"PerformanceNavigationTiming","os":"others","os_version":"","device_type":"pc","network":"4g","screen_direction":"","unload_time":0,"redirect_time":0,"dns_time":0,"tcp_time":0,"ssl_time":0,"response_time":2,"download_time":2,"first_paint_time":288,"first_contentful_paint_time":288,"dom_ready_time":0,"onload_time":0,"white_time":0,"render_time":0,"decoded_body_size":718,"encoded_body_size":718}
Results:
| Attribute | Description | Type | Values |
|---|---|---|---|
| dns_time | DNS Lookup | number | domainLookupEnd - domainLookupStart |
| tcp_time | Connection Negotiation | number | connectEnd - connectStart |
| response_time | Requests and Responses | number | responseStart - requestStart |
| white_time | White Screen | number | responseStart - navigationStart |
| dom_ready_time | Dom Ready | number | domContentLoadedEventStart - navigationStart |
| onload_time | Onload | number | loadEventStart - navigationStart |
| render_time | EventEnd | number | loadEventEnd -navigationStart |
| unload_time | Unload | number | (Optional) unloadEventEnd - unloadEventStart |
| redirect_time | Redirect | number | (Optional) redirectEnd - redirectStart |
| ssl_time | SSL | number | (Optional) connectEnd - secureConnectionStart |
| download_time | Download | number | (Optional) responseEnd - responseStart |
EN: Get page load time(
PerformanceNavigationTiming).ZH: 获取页面加载相关的各项数据。