The Javascript typedArray.every() function is an inbuilt function in JavaScript that is used to test whether the elements present in the typedArray satisfy the condition provided by a function.
Syntax:
typedarray.every(callback)
Parameters: It takes the callback function as a parameter. The callback is a function for testing the elements of the typedArray. This callback function takes three parameters that are specified below-
- current_value: It is the current element being processed in the typedArray.
- index: It is the index of the current element which is being processed in the typed array.
- array: It is the typedArray.
Return value: It returns true if the function callback returns a true value for each and every array element present in the typedArray otherwise returns false.
JavaScript examples to show the working of this function:
Example 1: In this example, the typedarray.every(callback) function satisfies the conditions and hence returns true.
<script>
// is_negative function is called to test the
// elements of the typedArray element.
function is_negative(current_value, index, array)
{
return current_value < 0;
}
// Creating a typedArray with some elements
const A = new Int8Array([ -5, -10, -15, -20, -25, -30 ]);
// Printing whether elements are satisfied by the
// functions or not
console.log(A.every(is_negative));
</script>
Output:
true
Example 2: In this example, the typedarray.every(callback) function does not satisfy the conditions and hence returns false.
<script>
// is_negative function is called to test the
// elements of the typedArray element.
function is_positive(current_value, index, array)
{
return current_value > 0;
}
// Creating a typedArray with some elements
const A = new Int8Array([ -5, -10, -15, -20, -25, -30 ]);
// Printing whether elements are satisfied by the
// functions or not
console.log(A.every(is_positive));
</script>
Output:
false