Atomics.store()

静态的Atomics.store（）方法将给定的值存储在数组中的指定位置，并返回该值。.

语法

Atomics.store(typedArray, index, value)

参数

typedArray: 一个指定类型的shared数组. 类型为 Int8Array, Uint8Array, Int16Array, Uint16Array, Int32Array, 或者 Uint32Array其中一个.
index: typedArray中用来存储value的位置.
value: 要存储的数字.

返回值

被存储的值.

异常

抛出一个TypeError异常, 如果 typedArray 不是上述给定的类型之一.
抛出一个TypeError异常, 如果 typedArray 不是一个指定类型的shared类型数组.
抛出一个RangeError异常, 如果 index 在 typedArray中越界了。

示例

var sab = new SharedArrayBuffer(1024);
var ta = new Uint8Array(sab);

Atomics.store(ta, 0, 12); // 12

规范

Specification	Status	Comment
ECMAScript Latest Draft (ECMA-262) Atomics.store	Draft	Initial definition in ES2017.

浏览器兼容性

Update compatibility data on GitHub

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet	Node.js
`store`	Chrome Full support 68 Full support 68 No support 60 — 63 Notes Notes Chrome disabled `SharedArrayBuffer` on January 5, 2018 to help reduce the efficacy of speculative side-channel attacks. This was a temporary removal while mitigations were put in place.	Edge No support 16 — 17 Notes No support 16 — 17 Notes Notes Support was removed to mitigate speculative execution side-channel attacks (Windows blog).	Firefox Full support 57 Notes Disabled Full support 57 Notes Disabled Notes Support was disabled by default to mitigate speculative execution side-channel attacks (Mozilla Security Blog). Disabled From version 57: this feature is behind the `javascript.options.shared_memory` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config. No support 55 — 57 No support 46 — 55 Disabled Disabled From version 46 until version 55 (exclusive): this feature is behind the `javascript.options.shared_memory` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE No support No	Opera No support No	Safari No support 10.1 — ?	WebView Android No support 60 — 63 Notes No support 60 — 63 Notes Notes Chrome disabled `SharedArrayBuffer` on January 5, 2018 to help reduce the efficacy of speculative side-channel attacks. This is intended as a temporary measure until other mitigations are in place.	Chrome Android No support 60 — 63 Notes No support 60 — 63 Notes Notes Chrome disabled `SharedArrayBuffer` on January 5, 2018 to help reduce the efficacy of speculative side-channel attacks. This is intended as a temporary measure until other mitigations are in place.	Firefox Android Full support 57 Notes Disabled Full support 57 Notes Disabled Notes Support was disabled by default to mitigate speculative execution side-channel attacks (Mozilla Security Blog). Disabled From version 57: this feature is behind the `javascript.options.shared_memory` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config. No support 55 — 57 No support 46 — 55 Disabled Disabled From version 46 until version 55 (exclusive): this feature is behind the `javascript.options.shared_memory` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	Opera Android No support No	Safari iOS No support No	Samsung Internet Android No support No Notes No support No Notes Notes Chrome disabled `SharedArrayBuffer` on January 5, 2018 to help reduce the efficacy of speculative side-channel attacks. This is intended as a temporary measure until other mitigations are in place.	nodejs Full support 8.10.0

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.
User must explicitly enable this feature.: User must explicitly enable this feature.

语法

参数

返回值

异常

示例

规范

浏览器兼容性

Legend

相关链接