Display data on different browser tabs

问题

The browser has two tabs opened with the different URL.

The data received by one html page from server...

Is it possible to display the same data in another tab which is already opened without reloading...If so how should that has to be done...

回答1:

Yes, if either:

Your code opened the other tab (via window.open), or
The window has a name (such as one assigned via the target attribute on a link, e.g. target="otherwindow")

Additionally, the window's content must be on the same origin as the document you're interacting with it from, or you'll be blocked by the Same Origin Policy.

1. If you're opening it via `window.open`

window.open returns a reference to the window object for the window that was opened, which (assuming it's on the same origin) you can do things with. E.g.:

var wnd = window.open("/some/url");

// ...later, when it's loaded...

var div = wnd.document.createElement('div');
div.innerHTML = "content";
wnd.document.appendChild(div);

You can use all of the usual DOM methods. If you load a library in the other window, you can use that as well. (It's important to understand that the two windows have two different global namespaces, they're not shared.)

Here's a full example. I used jQuery in the below just for convenience, but jQuery is not required for this. As I said above, you can use the DOM directly (or another library if you like):

Live Copy | Live Source

HTML:

<button id="btnOpen">Open Window</button>
<button id="btnAdd">Add Content</button>
<button id="btnRemove">Remove Content</button>

JavaScript:

(function($) {
  var btnOpen,
      btnAdd,
      btnRemove,
      wnd,
      wndTimeout,
      wnd$,
      newContentId = 0;

  btnOpen   = $("#btnOpen");
  btnAdd    = $("#btnAdd");
  btnRemove = $("#btnRemove");
  updateButtons();

  btnOpen.click(openWindow);
  btnAdd.click(addContent);
  btnRemove.click(removeContent);

  function updateButtons() {
    btnOpen[0].disabled = !!wnd;
    btnAdd[0].disabled = !wnd$;
    btnRemove[0].disabled = !wnd$;
  }

  function openWindow() {
    if (!wnd) {
      display("Opening window");
      wnd$ = undefined;
      wndTimeout = new Date().getTime() + 10000;
      wnd = window.open("/etogel/1");
      updateButtons();
      checkReady();
    }
  }

  function windowClosed() {
    display("Other window was closed");
    wnd = undefined;
    wnd$ = undefined;
    updateButtons();
  }

  function checkReady() {
    if (wnd && wnd.jQuery) {
      wnd$ = wnd.jQuery;
      wnd$(wnd).on("unload", windowClosed);
      updateButtons();
    }
    else {
      if (new Date().getTime() > wndTimeout) {
        display("Timed out waiting for other window to be ready");
        wnd = undefined;
      }
      else {
        setTimeout(checkReady, 10);
      }
    }
  }

  function addContent() {
    var div;

    if (wnd$) {
      ++newContentId;
      display("Adding content '" + newContentId + "'");
      wnd$("<div>").addClass("ourcontent").html("Added content block #" + newContentId).appendTo(wnd.document.body);
    }
  }

  function removeContent() {
    var div;

    if (wnd$) {
      div = wnd$("div.ourcontent").first();
      if (div[0]) {
        display("Removing div '" + div.html() + "' from other window");
        div.remove();
      }
      else {
        display("None of our content divs found in other window, not removing anything");
      }
    }
  }

  function display(msg) {
    $("<p>").html(String(msg)).appendTo(document.body);
  }

})(jQuery);

2. If you're opening it via a link with `target`

window.open can find and return a reference to that window:

var wnd = window.open("", "otherwindow");

Note that the URL argument is empty, but we pass it the name from the target attribute. The window must already be open for this to work (otherwise it will open a completely blank window).

Here's the above example, modified to assume you've opened the window via <a href="..." target="otherwindow">...</a>:

Live Copy | Live Source

HTML:

<a href="/etogel/1" target="otherwindow">Click to open the other window</a>
<br><button id="btnGet">Get Window</button>
<button id="btnAdd">Add Content</button>
<button id="btnRemove">Remove Content</button>

JavaScript:

(function($) {
  var btnGet,
      btnAdd,
      btnRemove,
      wnd,
      wndTimeout,
      wnd$,
      newContentId = 0;

  btnGet    = $("#btnGet");
  btnAdd    = $("#btnAdd");
  btnRemove = $("#btnRemove");
  updateButtons();

  btnGet.click(getWindow);
  btnAdd.click(addContent);
  btnRemove.click(removeContent);

  function updateButtons() {
    btnGet[0].disabled = !!wnd;
    btnAdd[0].disabled = !wnd$;
    btnRemove[0].disabled = !wnd$;
  }

  function getWindow() {
    if (!wnd) {
      display("Getting 'otherwindow' window");
      wnd$ = undefined;
      wndTimeout = new Date().getTime() + 10000;
      wnd = window.open("", "otherwindow");
      updateButtons();
      checkReady();
    }
  }

  function windowClosed() {
    display("Other window was closed");
    wnd = undefined;
    wnd$ = undefined;
    updateButtons();
  }

  function checkReady() {
    if (wnd && wnd.jQuery) {
      wnd$ = wnd.jQuery;
      wnd$(wnd).on("unload", windowClosed);
      updateButtons();
    }
    else {
      if (new Date().getTime() > wndTimeout) {
        display("Timed out looking for other window");
        wnd = undefined;
        updateButtons();
      }
      else {
        setTimeout(checkReady, 10);
      }
    }
  }

  function addContent() {
    var div;

    if (wnd$) {
      ++newContentId;
      display("Adding content '" + newContentId + "'");
      wnd$("<div>").addClass("ourcontent").html("Added content block #" + newContentId).appendTo(wnd.document.body);
    }
  }

  function removeContent() {
    var div;

    if (wnd$) {
      div = wnd$("div.ourcontent").first();
      if (div[0]) {
        display("Removing div '" + div.html() + "' from other window");
        div.remove();
      }
      else {
        display("None of our content divs found in other window, not removing anything");
      }
    }
  }

  function display(msg) {
    $("<p>").html(String(msg)).appendTo(document.body);
  }

})(jQuery);

来源：https://stackoverflow.com/questions/13706001/display-data-on-different-browser-tabs

标签

javascript