JavaScript Tutorial/jQuery/height — различия между версиями

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Текущая версия на 08:25, 26 мая 2010

Get document height

<html>
  <head>
    <script type="text/javascript" src="js/jquery-1.3.2.js"></script>
    <script type="text/javascript">
        $(document).ready(function(){
             alert($(document).height());


        });
    </script>
    <style>
    div{
        width:200px;
        height:100px;
        overflow:auto;
    }
    h1 { width:1000px;height:1000px; }
  </style>
  </head>
  <body>
    <body>
       <div><h1>header 1</h1></div>
    </body>
</html>


Get tag height

<html>
  <head>
    <script type="text/javascript" src="js/jquery-1.3.2.js"></script>
    <script type="text/javascript">
        $(document).ready(function(){
             alert($("div").height());


        });
    </script>
    <style>
    div{
        width:200px;
        height:100px;
        overflow:auto;
    }
    h1 { width:1000px;height:1000px; }
  </style>
  </head>
  <body>
    <body>
       <div><h1>header 1</h1></div>
    </body>
</html>


height(): find the height of the window and document.

<html>
  <head>
    <script type="text/javascript" src="js/jquery-1.3.2.js"></script>
    <script type="text/javascript">
        $(document).ready(function(){
        
                function showHeight(ele, h) {
                  alert( h + "px.");
                }
                $("p").click(function () { 
                  showHeight("paragraph", $("p").height()); 
                });

        });
    </script>
  </head>
  <body>
    <body>
         <p>Hello</p><p>Paragraph</p>
                 
    </body>
</html>


height(val): If no explicit unit was specified (like "em" or "%") then "px" is concatenated to the value.

<html>
  <head>
    <script type="text/javascript" src="js/jquery-1.3.2.js"></script>
    <script type="text/javascript">
        $(document).ready(function(){
        
               
                    $("div").one("click", function () {
                      $(this).height(30)
                             .css({cursor:"auto", backgroundColor:"green"});
                    });
               

        });
    </script>
<style>
  div { width:50px; height:70px; float:left; margin:5px;
        background:rgb(255,140,0); cursor:pointer; }
  
</style>
  </head>
  <body>
    <body>
          <div></div>
          <div></div>
                 
    </body>
</html>


Set height to

<html>
  <head>
    <script type="text/javascript" src="js/jquery-1.3.2.js"></script>
    <script type="text/javascript">
        $(document).ready(function(){
             $("div").height(300);


        });
    </script>
    <style>
    div{
        width:200px;
        height:100px;
        overflow:auto;
    }
    h1 { width:1000px;height:1000px; }
  </style>
  </head>
  <body>
    <body>
       <div><h1>header 1</h1></div>
    </body>
</html>


Window height

<html>
  <head>
    <script type="text/javascript" src="js/jquery-1.3.2.js"></script>
    <script type="text/javascript">
        $(document).ready(function(){
        
               
                  alert($(window).height());
               

        });
    </script>
  </head>
  <body>
    <body>
         <p>Hello</p><p>Paragraph</p>
                 
    </body>
</html>