如何使元素的可见度.hide(), .show(),或.toggle()?
如果一个元素是visible或hidden?
当前回答
您可以在显示时添加一个类。添加一个类,show。然后检查它有一个类:
$('#elementId').hasClass('show');
如果有的话它返回为真show类。
添加像这样的 CSS :
.show{ display: block; }
其他回答
jQuery 解决方案, 但对于想更改按钮文字的人来说,
$(function(){
$("#showHide").click(function(){
var btn = $(this);
$("#content").toggle(function () {
btn.text($(this).css("display") === 'none' ? "Show" : "Hide");
});
});
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button id="showHide">Hide</button>
<div id="content">
<h2>Some content</h2>
<p>
What is Lorem Ipsum? Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged.
</p>
</div>expect($("#message_div").css("display")).toBe("none");
if($('#postcode_div').is(':visible')) {
if($('#postcode_text').val()=='') {
$('#spanPost').text('\u00a0');
} else {
$('#spanPost').text($('#postcode_text').val());
}
您可以通过使用:visible和:hidden选择器。
var isVisible = $('#myDiv').is(':visible');
var isHidden = $('#myDiv').is(':hidden');
如果你只是根据它的能见度 依据一个元素行事 你可以包括:visible或:hidden在选择表达式中。例如:
$('#myDiv:visible').animate({left: '+=200px'}, 'slow');
