how to remove all children from element code example

Example 1: how to destroy all children

public void ClearChildren() {
    Debug.Log(transform.childCount);
    float i = 0;
    foreach (Transform child in transform) {
        i += 1;
        DestroyImmediate(child.gameObject);
    }
    Debug.Log(transform.childCount);
}

Example 2: how to destroy all children

while (transform.childCount > 0) {
    DestroyImmediate(transform.GetChild(0).gameObject);
}