if($("h1").is(":hidden")){
    // your code..
}

expect($("#message_div").css("display")).toBe("none");

if ( $(element).css('display') == 'none' || $(element).css("visibility") == "hidden"){
    // 'element' is hidden
}

上述方法不考虑父母亲的可见度。为了也考虑父母的可见度,您应该使用.is(":hidden")或.is(":visible").

例如,

<div id="div1" style="display:none">
  <div id="div2" style="display:block">Div2</div>
</div>

上述方法将考虑div2可见时可见:visible。但是,在很多情况下,特别是当您需要找到隐藏的父(母)是否发现任何错误时,上述情况也许有用,因为在这种情况下,隐藏的母(母)之间是否有错误。:visible不会工作。

但如果元素的 CSS 和下面一样呢?

.element{
    position: absolute;left:-9999;    
}

苏Stack 溢出问题的此答案如何检查元素是否在屏幕外还应加以考虑。

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>

我找了这个, 没有一个答案是正确的 我的案子是正确的, 所以我创造了一个功能, 返回假的,如果一个人的眼睛看不到元素

jQuery.fn.extend({
  isvisible: function() {
    //
    //  This function call this: $("div").isvisible()
    //  Return true if the element is visible
    //  Return false if the element is not visible for our eyes
    //
    if ( $(this).css('display') == 'none' ){
        console.log("this = " + "display:none");
        return false;
    }
    else if( $(this).css('visibility') == 'hidden' ){
        console.log("this = " + "visibility:hidden");   
        return false;
    }
    else if( $(this).css('opacity') == '0' ){
        console.log("this = " + "opacity:0");
        return false;
    }   
    else{
        console.log("this = " + "Is Visible");
        return true;
    }
  }  
});