2017-01-03 51 views
0

因此,使用以下代碼時,如果我的用戶代理是移動用戶或正常瀏覽器的用戶代理,它將繼續執行JQuery代碼,而我只在用戶所在的位置運行該代碼時一個手機瀏覽器。用戶代理移動不工作

 <script type="text/javascript"> 
window.mobilecheck = function() { 
var check = false; 
(function(a){if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm(os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s)|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp(i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac(|\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt(|\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg(g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v)|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v)|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-|)|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4))) check = true;})(navigator.userAgent||navigator.vendor||window.opera); 
return check; 
}; 
if(window.mobilecheck){ //If mobile is True run this JQuery Code 

    // create jump menu for mobile 
    (function($) { 
     $(document).ready(function() { 
     $('ul.menu').each(function(){ 
      var list=$(this), 
      select=$(document.createElement('select')).insertBefore($(this).hide()).change(function(){ 
      window.location.href=$(this).val(); 

      }); 
      $('>li a', this).each(function(){ 
      var option=$(document.createElement('option')) 
       .appendTo(select) 
       .val(this.href) 
       .html($(this).html()); 
       select.addClass('menu') 
      if($(this).attr('class') === 'selected'){ 
       option.attr('selected','selected'); 

      } 
      }); 
      list.remove(); 
     }); 
     }); 
    })(jQuery); 

} //End if mobile check 
    </script> 
+0

什麼問題? – epascarello

+1

你可以嘗試'if(typeof window.orientation!=='undefined'){...}'因爲這僅受移動設備支持 –

+3

'window.mobilecheck'是一個函數,但你並沒有調用它你的if語句if(window.mobilecheck){...}'。你需要寫'if(window.mobilecheck()){...}'。你的if語句總是在運行,因爲'window.mobilecheck'是一個'truthy'語句。 –

回答

1

window.mobilecheck是一個函數,但是你沒有在你的if語句中調用它。

以上,你的代碼看起來是這樣的:

window.mobilecheck = function() { 
    //Your code here... 
}; 

if (window.mobilecheck) { 
    //This code will always run because window.mobilecheck is truthy. 
} 

但是,如果你改變你的代碼看起來像這樣:

//Call the function here. 
if (window.mobilecheck()) { 
    //This will only run if the return value is true. 
} 

你需要得到的mobilecheck值,但你可以只有在你調用函數時才這樣做。

風格上,我更願意把價值在一個變量,可能的地方在那裏,你可以輕鬆地在以後檢索該值:

var isMobile = window.isMobile = window.mobilecheck(); 
if (isMobile) { 
    //Do stuff here... 
} 

看到的片段爲truthy VS在JavaScript相關falsey檢查爲例對你的問題。

(function() { 
 

 
    'use strict'; 
 
    
 
    //Do a falsey check to see if the mobile function is defined. 
 
    if (!window.mobilecheck) { 
 
    document.write("Something's not right..."); 
 
    } 
 
    
 
    window.mobilecheck = function mobileCheck() { 
 
    //Do stuff here... 
 
    var isMobile = true; 
 
    return isMobile; 
 
    }; 
 
    
 
    //This will always run because window.mobilecheck has been defined. 
 
    if (window.mobilecheck) { 
 
    document.write("<br />Mobile check has been defined"); 
 
    } 
 
    
 
    var isMobile = window.mobilecheck(); 
 
    //We've retrieved the value from mobilecheck now. 
 
    if (isMobile) { 
 
    document.write("<br />This is a mobile device"); 
 
    } else { 
 
    document.write("This is not a mobile device"); 
 
    } 
 

 
})();

我希望這有助於。