如何在jQuery中识别所选的选择器？

Question

$('#select_id1, #select_id2, #select_id3').change(function() {
    // If '#select_id1' has changed, 'str' should be equal to 'select_id1'.
    // If '#select_id2' has changed, 'str' should be equal to 'select_id2'.
    // If '#select_id3' has changed, 'str' should be equal to 'select_id3'.
    str = <what should be here ?>
});

Answer 1

您可以获取调用更改的元素的ID this.id.

$('#select_id1, #select_id2, #select_id3').change(function() {
    str = this.id;
});