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原标题:Hidden textarea validation

我怎么能够检查一下是否用javascript隐藏了文字。

最佳回答

如果你有两点同样的id子,互联网的探索者就会混淆。 虽然这些物品在火ox中被罚款,但它们没有在互联网的探索者身上。 我改变了案文的样子,现在正在工作。

感谢 You guys.

问题回答
var textArea = document.getElementById( textAreaId );

if (textArea.currentStyle.visibility ===  hidden  || textArea.currentStyle.display ===  none )
{
   /* code */
}
var myBox = document.getElementById("myBox");
if (myBox.currentStyle.display === "none" || myBox.currentStyle.visibility === "hidden") {
  alert("Box is invisible");
}

——工程

<textarea id="myBox">Lorem ipsum doloet set amit</textarea>

你们是否尝试过?getBoundingClientRect()?

It will give all zero values if the element or a parent has display:none.
With visibility:hidden the element is there and then has a boudning rectangle.

<html>
<head>
    <title>hidden</title>
</head>
<body>
<div style="display:none">
    <form>
        <textarea></textarea>
    </form>
</div>
<script>
  var rect = document.getElementsByTagName( TEXTAREA )[0].getBoundingClientRect();
  alert(rect.right === 0 ?  hidden : visible );
</script>
</body>
</html>

如果你们的 c们不敢展示:无;吗?

如果你想要隐瞒或显示,你就应该能够使用一些“金”:

$(document.body).css( "display", "none" );

$(myF或m.elements).hide()

因此。





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