JS檢測移動和設置條件

Question

我有確定我的時間線寬度的功能。我想分別設置桌面和移動設備的寬度。我怎麼能寫他們，如果桌面如此使用這個代碼，如果移動，使用另一個代碼？

If(mobile) { use js function for mobile } else { use js function for desktop }

這裏是桌面

\t function setTimelineWidth(timelineComponents, width) { 
 
//Line 3 is set width 100% 
 
\t \t \t totalWidth = $(window).width((timelineComponents['timelineDates'].length * 100)); 
 
\t \t \t //} 
 
\t \t timelineComponents['eventsWrapper'].css('width', totalWidth+'px'); 
 
\t \t updateFilling(timelineComponents['eventsWrapper'].find('a.selected'), timelineComponents['fillingLine'], totalWidth); 
 
\t \t updateTimelinePosition('next', timelineComponents['eventsWrapper'].find('a.selected'), timelineComponents); 
 
\t 
 
\t \t return totalWidth; 
 
\t }

JS溫控功能這裏是js函數移動寬度

\t function setTimelineWidth(timelineComponents, width) { 
 
\t \t var timeSpan = daydiff(timelineComponents['timelineDates'][0], timelineComponents['timelineDates'][timelineComponents['timelineDates'].length-1]), 
 
\t \t \t timeSpanNorm = timeSpan/timelineComponents['eventsMinLapse'], 
 
\t \t \t timeSpanNorm = Math.round(timeSpanNorm) + 4, 
 
\t \t \t totalWidth = timeSpanNorm*width; 
 
\t \t timelineComponents['eventsWrapper'].css('width', totalWidth+'px'); 
 
\t \t updateFilling(timelineComponents['eventsWrapper'].find('a.selected'), timelineComponents['fillingLine'], totalWidth); 
 
\t \t updateTimelinePosition('next', timelineComponents['eventsWrapper'].find('a.selected'), timelineComponents); 
 
\t 
 
\t \t return totalWidth; 
 
\t }

Answer 1

你的代碼改成這樣

 var setTimelineWidth;//this is going to be your function based on device 
     function IsMobile() { 
      var Uagent = navigator.userAgent||navigator.vendor||window.opera; 
      return(/(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|android|ipad|playbook|silk/i.test(Uagent)||/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(Uagent.substr(0,4))); 
     }; 
     if (IsMobile()) 
     { 
      setTimelineWidth = function(timelineComponents, width) { 
      //Line 3 is set width 100% 
      totalWidth = $(window).width((timelineComponents['timelineDates'].length * 100)); 
      //} 
      timelineComponents['eventsWrapper'].css('width', totalWidth + 'px'); 
      updateFilling(timelineComponents['eventsWrapper'].find('a.selected'), timelineComponents['fillingLine'], totalWidth); 
      updateTimelinePosition('next', timelineComponents['eventsWrapper'].find('a.selected'), timelineComponents); 

      return totalWidth; 
      } 
     } 
     else 
     { 
      setTimelineWidth = function(timelineComponents, width) { 
      var timeSpan = daydiff(timelineComponents['timelineDates'][0], timelineComponents['timelineDates'][timelineComponents['timelineDates'].length - 1]), 
       timeSpanNorm = timeSpan/timelineComponents['eventsMinLapse'], 
       timeSpanNorm = Math.round(timeSpanNorm) + 3, 
       //totalWidth = (timelineComponents['timelineDates'].length * 100) 
       totalWidth = $(window).width((timelineComponents['timelineDates'].length * 100)); 
      timelineComponents['eventsWrapper'].css('width', totalWidth + 'px'); 
      updateFilling(timelineComponents['eventsWrapper'].find('a.selected'), timelineComponents['fillingLine'], totalWidth); 
      updateTimelinePosition('next', timelineComponents['eventsWrapper'].find('a.selected'), timelineComponents); 

      return totalWidth; 
      } 
     } 

Answer 2

if(typeof window !== 'undefined'){ 
     var ua = 'navigator' in window && 'userAgent' in navigator && 
      navigator.userAgent.toLowerCase() || ''; 
    }  
    var judge = { 
      isMobile: function() { 
         return !!ua.match(/(iPhone|iPod|android|ios|iPad|windows 
      phone|tablet)/i); 
        }, 
        isPc: function() { 
         return !judge.isMobile(); 
        } 
     }   

     if(judge.isMobile()){ 
     //mobile 
     }else(judge.isPc()){ 
     //pc 
     } 

加，我也寫了一個NPM包判斷，https://github.com/hawx1993/judge