The simple implementation _javascript technique of acquiring class in JavaScript

JS did not get the class method, found some packaging good methods, here to tidy up

(1) Encapsulation first

Encapsulates 
      the GetClass function getclass (tagname,classname)//obtain a label named TagName, the element 
      { 
        if ( Document.getelementsbyclassname)//support this function 
        {return    document.getelementsbyclassname (className); 
        } 
        else 
        {    var tags=document.getelementsbytagname (tagName);//Get tag 
          var tagarr=[];//to return the element with a class name of classname For 
          (Var i=0;i < tags.length; i++) 
          { 
            if (Tags[i].class = = ClassName) 
            { 
              Tagarr[tagarr.length] = tags[i];//Save the element that satisfies the condition 
            } 
          } 
          return tagarr; 
        } 
      

(2) Main program

<ul>
  <li class= "Dictap" >1</li>
  <li class= "Dictap" >2</li>
  <li class= " Dictap ">3</li>
  <li class=" Dictap ">4</li>
</ul>     

(3) Get all Li content program with class as Dictap

Window.onload = function ()
{  var topmenus = getclass (' li ', ' Dictap ');
  for (Var i=0;i < topmenus.length i++)
  {
    alert (topmenus[i].innerhtml);    
  }

}

(4) Practical application in Project

Click on the custom attribute PersonID, open the Details page and carry the value across pages var Dictap = getclass (' li ', ' Dictap '); for (var i=0;i <dicTap.length; i++) {Dictap[i].addeventlistener (' tap ', function () {var 
            Personid=this.getattribute ("PersonId"); 
            Localstorage.a=personid; 
          Mui.openwindow ({url: ' disciplinedetail.html ', id: ' Disciplinedetail '}); 
        }//Package GetClass function GetClass (tagname,classname)//Get tag name TagName, class name ClassName element { 
        if (document.getelementsbyclassname)//support this function {return document.getelementsbyclassname (className); else {var tags=document.getelementsbytagname (tagName);//Get tag var tagarr=[];//used to return 
            Returns the element for the class name ClassName for (Var i=0;i < tags.length; i++) {if (Tags[i].class = = className) 
            {Tagarr[tagarr.length] = tags[i];//Save the element that satisfies the condition} return Tagarr; } 
      }

Above this JavaScript to get the class of simple implementation is a small series to share all the content of everyone, hope to give you a reference, but also hope that we support the cloud habitat community.