根据标题,$(' #id')与此相同,例如在每个循环中?
编辑:我们说我有以下代码
$('#id').each(function() {
var id = $(this).attr('id');
});
jQuery相当于"这个"我可以使用而不是"这个"?
我希望这更清楚。
答案 0 :(得分:1)
这是$(this)
:
$('.class').each(function(){
$(this).css('color', 'red');
});
答案 1 :(得分:1)
在您的代码中
var $element = $('#id').each(function() {
// here this refers to the native JS element. The same object that you get when you call document.getElementById('id');
var id = this.getAttribute('id'); // this.id will also work
// $(this) refers to the jQuery collection object, which is same as $('#id').
var id = $(this).attr('id');
// A jQuery collection is also an array of native objects, so you can also access the element using array access
var id = $(this)[0].getAttribute('id');
// This may not make sense in the above example, but when you have the collection as a variable, this might be the best option
var id = $element[0].id;
});
答案 2 :(得分:0)
在.each()
中,回调函数接收当前索引和元素作为参数,因此您可以使用元素参数而不是this
:
$('#id').each(function(index, element) {
var id = element.id;
// or:
var id = $(element).attr('id');
});