document.getSelection（）。toString（）在使用iframe时即始终为“”

Question

I wanted to get the selected text onmouseup. 我想获取选定的文本onmouseup。

I also tried 我也试过

setTimeout(() => {
  var selectedData = contentWrapper.getSelection().toString();
  alert(selectedData)
}, 1008)

html code HTML代码

<iframe src="url"></iframe>

js code js代码

var contentWrapper=document.getElementsByTagName("iframe")[0].contentDocument;
contentWrapper.body.addEventListener('mouseup', this.CheckSelections, false);

function CheckSelections() {
  var selectedData = contentWrapper.getSelection().toString();
  alert(selectedData)
}

Answer 1

This way it works in IE, Chrome & FF (testing on local), but I am not able to touch iframe here. 这样，它就可以在IE，Chrome和FF（在本地测试）中工作，但是我无法在此处触摸iframe。

 function showSelection() { var selectedData = document.getSelection().toString(); alert(selectedData) } var contentWrapper; function attachIF() { if(location.href == "https://stacksnippets.net/js") return; var ifr = document.createElement("iframe"); ifr.src="javascript:'"+ // Access is denied. Here on stackoverflow.com "<script>window.onload=function(){"+ "document.write(\\\\'<script>if(document.domain)document.domain=\\\\\\""+document.domain+"\\\\\\";"+ "document.write(\\""+parent.document.body.innerText+"\\");"+ "<\\\\\\\\/script>\\\\');"+ "document.close();"+ "parent.contentWrapper = document;"+ "document.body.onmouseup=parent.CheckSelections;"+ "};<\\/script>'"; document.body.appendChild(ifr); } function CheckSelections() { var selectedData = contentWrapper.getSelection().toString(); alert(selectedData) }

 <body onmouseup="showSelection()" onload=attachIF()> <iframe src="https://stacksnippets.net/js"></iframe> Some text to be selected. </body>

document.getSelection（）。toString（）在使用iframe时即始终为“”

问题描述

1 个解决方案

解决方案1
0 2019-09-06 12:16:00

document.getSelection（）。toString（）在使用iframe时即始终为“”

问题描述

1 个解决方案

解决方案1 0 2019-09-06 12:16:00

解决方案1
0 2019-09-06 12:16:00