how to get selected text from iframe with javascript?

问题

how to get selected text from iframe with javascript ?

回答1:

var $ifx = $('<iframe src="filename.html" height=200 width=200></iframe>').appendTo(document.body);

$(document.body).bind('click', function(){
     var u_sel;
     if(window.getSelection){
        u_sel = ifx[0].contentWindow.getSelection();
      // u_sel.text()   InternetExplorer !!
      alert(u_sel);
     }
});

That should do it, as long as the iframe src is targeting your own domain. Tested only on FireFox 3.6.7 so far.

回答2:

function getIframeSelectionText(iframe) {
  var win = iframe.contentWindow;
  var doc = iframe.contentDocument || win.document;

  if (win.getSelection) {
    return win.getSelection().toString();
  } else if (doc.selection && doc.selection.createRange) {
    return doc.selection.createRange().text;
  }
}

var iframe = document.getElementById("your_iframe");
alert(getIframeSelectionText(iframe));

As noted by jAndy, this will only work if the iframe document is served from the same domain as the containing document.

来源：https://stackoverflow.com/questions/3324959/how-to-get-selected-text-from-iframe-with-javascript