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UI/API/1.8/Position

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jQuery UI Position Utility

Overview

Utility script for absolutely positioning any widget relative to the window, document, a particular element, or the cursor/mouse.

Do not need ui.core.js or effects.core.js.

Dependencies

  • none (only jQuery core)

Example

Clicking on the green element transfers to the other.

$("#position1").position({
  my: "center",
  at: "center",
  of: "#targetElement"
});
$("#position2").position({
  my: "left top",
  at: "left top",
  of: "#targetElement"
});
$("#position3").position({
  my: "right center",
  at: "right bottom",
  of: "#targetElement"
});
$(document).mousemove(function(ev){
  $("#position4").position({
    my: "left bottom",
    of: ev,
    offset: "3 -3",
    collision: "fit"
  });
});

<!DOCTYPE html>
<html>
<head>
  <link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css" rel="stylesheet" type="text/css"/>
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
  <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"></script>
  <style type="text/css">
#targetElement { width:240px;height:200px;background-color:#999;margin:30px auto; }
.positionDiv { width:50px;height:50px;opacity:0.6; }
#position1 {background-color:#F00;}
#position2 {background-color:#0F0;}
#position3 {background-color:#00F;}
#position4 {background-color:#FF0;}
</style>

  <script>
  $(document).ready(function() {
    
$("#position1").position({
  my: "center",
  at: "center",
  of: "#targetElement"
});
$("#position2").position({
  my: "left top",
  at: "left top",
  of: "#targetElement"
});
$("#position3").position({
  my: "right center",
  at: "right bottom",
  of: "#targetElement"
});
$(document).mousemove(function(ev){
  $("#position4").position({
    my: "left bottom",
    of: ev,
    offset: "3 -3",
    collision: "fit"
  });
});

  });
  </script>
</head>
<body style="font-size:62.5%;">
  
<div id="targetElement">
  <div class="positionDiv" id="position1"></div>
  <div class="positionDiv" id="position2"></div>
  <div class="positionDiv" id="position3"></div>
  <div class="positionDiv" id="position4"></div>
</div>

</body>
</html>

Arguments

  • my

    Type:
    String

    Defines which position on the element being positioned to align with the target element: "horizontal vertical" alignment. A single value such as "right" will default to "right center", "top" will default to "center top" (following CSS convention). Acceptable values: "top", "center", "bottom", "left", "right". Example: "left top" or "center center"

  • at

    Type:
    String

    Defines which position on the target element to align the positioned element against: "horizontal vertical" alignment. A single value such as "right" will default to "right center", "top" will default to "center top" (following CSS convention). Acceptable values: "top", "center", "bottom", "left", "right". Example: "left top" or "center center"

  • of

    Type:
    Selector

    Element to position against. You can use a browser event object contains pageX and pageY values. Example: "#top-menu"

  • offset

    Type:
    String

    Add these left-top values to the calculated position, eg. "50 50" (left top) A single value such as "50" will apply to both.

  • collision

    Type:
    String

    When the positioned element overflows the window in some direction, move it to an alternative position. Similar to my and at, this accepts a single value or a pair for horizontal/vertical, eg. "flip", "fit", "fit flip", "fit none".

    • flip: to the opposite side and the collision detection is run again to see if it will fit. If it won't fit in either position, the center option should be used as a fall back.
    • fit: so the element keeps in the desired direction, but is re-positioned so it fits.
    • none: not do collision detection.

  • using

    Type:
    Function

    When specified the actual property setting is delegated to this callback. Receives a single parameter which is a hash of top and left values for the position that should be set.