Getelementsbyclassname () method compatible with IE

Compatible with IE8 and below Getelementsbyclassname () methods

1 2     functionGetelementsbyclassname =function(ClassName, tagName) {3         //if the browser supports Getelementsbyclassname (), return directly4         if(document.getelementsbyclassname) {5             returndocument.getelementsbyclassname (className)6         }7         //otherwise traverse the label name collection specified by the document file8         varChildren =document.getElementsByTagName (tagName);9         //this array holds the class elements that are obtained after the traversalTen         varelements =NewArray (); One       A          for(vari = 0; i < children.length; i++) { -             varChild =Children[i]; -             varClassnames = Child.className.split (");//split multiple class elements the              for(varj = 0; J < Classnames.length; J + +) { -                 if(Classnames[j] = =className) { - Elements.push (child); -                      Break; +                 } -             } +         } A         returnelements; at};

Getelementsbyclassname () method compatible with IE