WebAssembly.Table.prototype.grow()
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 grow()
prototype method of the WebAssembly.Table
object increases the size of the Table
instance by a specified number of elements, filled with the provided value.
Syntax
grow(delta)
grow(delta, value)
Parameters
delta
-
The number of elements you want to grow the table by.
value
Optional-
The element to fill the newly-allocated space with.
Return value
The previous length of the table.
Exceptions
RangeError
-
Thrown in one of the following cases:
- If the current size added with
delta
exceeds the Table instance's maximum size capacity. - If the client doesn't have enough memory for the allocation.
- If the current size added with
TypeError
-
Thrown if
value
is not a value of the element type of the table.
Examples
Using grow
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 element using Table.grow()
:
console.log(table.length); // 2
table.grow(1);
console.log(table.length); // 3
Using grow with a value
The following example creates a new WebAssembly Table
instance with an initial size of
0 and a maximum size of 4, filling it with an object:
const myObject = { hello: "world" };
const table = new WebAssembly.Table({
element: "externref",
initial: 0,
maximum: 4,
});
Grow the table by 4 units and fill it with a value using WebAssembly.grow()
:
table.grow(4, myObject);
console.log(myObject === table.get(2)); // true
Specifications
Specification |
---|
WebAssembly JavaScript Interface # dom-table-grow |
Browser compatibility
BCD tables only load in the browser