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jQuery determines the browser and dynamically adjust the width of select method

  • 2021-01-19 22:01:54
  • OfStack

This article illustrates how jQuery determines the browser and dynamically adjusts the width of select. To share with you for your reference, as follows: 


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
  <title>Untitled Page</title> 
  <mce:script src="jquery-1.4.4.js" mce_src="jquery-1.4.4.js" type="text/javascript"></mce:script> 
  <mce:script type="text/javascript"><!-- 
    function userBrowser() { 
      var browserName = navigator.userAgent.toLowerCase(); 
      if (/msie/i.test(browserName) && !/opera/.test(browserName)) { 
        browserName="ie"; 
      } else if (/firefox/i.test(browserName)) { 
        browserName = "firefox"; 
      } else if (/chrome/i.test(browserName) && /webkit/i.test(browserName) && /mozilla/i.test(browserName)) { 
        browserName = "chrome"; 
      } else if (/opera/i.test(browserName)) { 
        browserName = "opera"; 
      } else if (/webkit/i.test(browserName) && !(/chrome/i.test(browserName) && /webkit/i.test(browserName) && /mozilla/i.test(browserName))) { 
        browserName = "safari"; 
      } else { 
        browserName = "unknow"; 
      } 
      return browserName; 
    } 
    $(function() { 
      var browser = userBrowser(); 
      if (browser == "ie") { 
        $("select").each(function() { 
          $(this).css("width", ($(this).width() + 10) + "px"); 
        }); 
      } 
      else if (browser == "firefox") { 
        $("select").each(function() { 
          $(this).css("width", ($(this).width() + 8) + "px"); 
        }); 
      } 
      else if (browser == "chrome") { 
        $("select").each(function() { 
          $(this).css("width", ($(this).width() + 6) + "px"); 
        }); 
      } 
      else if (browser == "safari") { 
        $("select").each(function() { 
          $(this).css("width", ($(this).width() + 30) + "px"); 
        }); 
      } 
    }); 
// --></mce:script> 
</head> 
<body> 
  <div> 
    <!--  note : select  in doctype Under the ,  There will be a width Than with width the text short , ie for 6px, ff for 4px --> 
    <input id="t1" type="text" style="width: 400px;" /><br /> 
    <select id="s1" style="width: 400px;"> 
      <option>1</option> 
    </select><br /> 
    <textarea id="TextArea1" cols="20" rows="2" style="width: 400px;"> 
  </div>
</body>
</html>

Readers who are interested in more jQuery related content can check out the special features of this site: jQuery Drag Effects and Techniques Summary, jQuery Expansion Techniques Summary, jQuery Common Classical Effects Summary, jQuery Animation and Effects Usage Summary, jquery Selectors Method Summary and jQuery Common Plugins and Usage Summary

I hope this article is helpful to jQuery program design.

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