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• 句法
• 浏览器兼容性
• 相关话题

这是 实验性技术
检查 浏览器兼容性表格 要小心谨慎在生产中使用这之前。

过时
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

getCost() 特性为 BudgetService interface returns a Promise that resolves to a double indicating the worst-case background operation cost of the provided background operation.

句法

var aPromise = BudgetService.getCost(operation);
aPromise.then(function(someDouble){ ... });
					

参数

operation

Must be "silent-push" .

返回

A Promise that resolves to a number.

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
getCost 弃用 非标	Chrome 55	Edge ≤79	Firefox ?	IE ?	Opera 42	Safari ?	WebView Android 55	Chrome Android 55	Firefox Android ?	Opera Android 42	Safari iOS ?	Samsung Internet Android 6.0

图例

完整支持

完整支持

兼容性未知 ?

兼容性未知

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

非标。预期跨浏览器支持较差。

弃用。不要用于新网站。

弃用。不要用于新网站。

元数据

• 最后修改： May 9, 2020

相关话题

1. BudgetService
2. 方法

   1. getBudget()
   2. getCost()
   3. reserve()