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WebAssembly.table.length

The length prototype property of the WebAssembly.Table object returns the length of the table, i.e. the number of elements in the table.

Syntax

table.length;

Examples

The following example creates a new WebAssembly Table instance with an initial size of 2 and a maximum size of 10.

var table = new WebAssembly.Table({ element: "anyfunc", initial: 2, maximum: 10 });

You can then grow the table by 1 with the following:

console.log(table.length);   // "2"
console.log(table.grow(1));  // "2"
console.log(table.length);   // "3"

Specifications

Specification Status Comment
WebAssembly JavaScript Interface
The definition of 'length' in that specification.
Working Draft Initial draft definition.

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Basic support 57 16 52
52
Disabled in the Firefox 52 Extended Support Release (ESR).
No 44 11
Mobile
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support 57 57 Yes
Disabled
Yes
Disabled
Disabled This feature is behind the Experimental JavaScript Features preference.
52
52
Disabled in the Firefox 52 Extended Support Release (ESR).
? 11 7.0
Server
Node.js
Basic support 8.0.0

See also

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Table/length