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

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

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

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

• WebAssembly overview page
• WebAssembly concepts
• Using the WebAssembly JavaScript API