The Array.some() is an inbuilt TypeScript function which is used to check for some element in the array passes the test implemented by the provided function.
Syntax:
array.some(callback[, thisObject])
Parameter: This method accept two parameter as mentioned above and described below:
- callback : This parameter is the Function to test for each element.
- thisObject : This parameter is the Object to use as this when executing callback.
Return Value: This method returns true if some element in this array satisfies the provided testing function.
Below example illustrate the Array some() method in TypeScriptJS:
Example 1:
TypeScript
// check for positive number function ispositive(element, index, array) { return element > 0; } // Driver code var arr = [ 11, 89, 23, 7, 98 ]; // check for positive number var value = arr.some(ispositive); console.log( value ); |
Output:
true
Example 2:
TypeScript
// check for even number function iseven(element, index, array) { return (element % 2 == 0); } // Driver code var arr = [ 11, 89, 23, 7, 91 ]; // check for positive number var value = arr.some(iseven); console.log( value ); |
Output:
false
