WebAssembly.Table.prototype.length

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since October 2017.

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

Examples

Using length

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

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

Grow the table by 1 using WebAssembly.grow():

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

Specifications

Specification
WebAssembly JavaScript Interface
# dom-table-length

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
length

Legend

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Full support
Full support

See also