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.

We'd love to hear more about your role and the company you work for
Please help us by answering a few questions.

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

See also