Issue with releasing IEElementsByClassName

Question

I'm having trouble figuring out how to resolve the getElementsByClassName problem in IE. How would I best implement robert nyman (can't post a link to it since I only allowed 1) in my code? Or would jquery resolution be better? my code

function showDesc(name) {
var e = document.getElementById(name);
//Get a list of elements that have a class name of service selected
var list = document.getElementsByClassName("description show");

//Loop through those items
for (var i = 0; i < list.length; ++i) { 
    //Reset all class names to description
    list[i].className = "description";
}

if (e.className == "description"){
    //Set the css class for the clicked element
    e.className += " show";
}
else{
    if (e.className == "description show"){
        return;
    }
}}

and I use it on this dev.msmnet.com/services/practice-management page to show / hide the description for each service (works in Chrome and FF). Any advice would be greatly appreciated.

Answer 1

, jQuery, :

function showDesc(name) {
    var e = $("#" + name);
    $(".description.show").removeClass("show");
    if(e.attr("class") == "description") {
        e.addClass("show");
    } else if(e.hasClass("description") && e.hasClass("show")) {
        return;
    }
}

Answer 2

.

function getElementsByClassName(findClass, parent) {

  parent = parent || document;
  var elements = parent.getElementsByTagName('*');
  var matching = [];

  for(var i = 0, elementsLength = elements.length; i < elementsLength; i++){

    if ((' ' + elements[i].className + ' ').indexOf(findClass) > -1) {
      matching.push(elements[i]);
    }

  }

  return matching;

}

, DOM.

, getElementsByClassName('a c') HTML <div class="a b c" />, ...

var elementClasses = elements[i].className.split(/\s+/),
    matchClasses = findClass.split(/\s+/), // Do this out of the loop :)
    found = 0;

for (var j = 0, elementClassesLength = elementClasses.length; j < elementClassesLength; j++) {

    if (matchClasses.indexOf(elementClasses[j]) > -1) {
        found++;
    }

}

if (found == matchClasses.length) {
   // Push onto matching array
}

, , ,

if (typeof document.getElementsByClassName != 'function') { }

Answer 3

jQuery:

$('.service').click( function() {
    var id = "#" + $(this).attr('id') + 'rt';
    $('.description').not(id).hide();
    $( id ).show();
}

show, jQuery?

Answer 4

HTMLElement.getElementByClassName(), Firefox Chrome, , , - ( ):

getElmByClass(clm, parent){
   // clm:  Array of classes
   if(typeof clm == "string"){ clm = [clm] }
   var i, m = [], bcl, re, rm;
   if (document.evaluate) {    // Non MSIE browsers
      v = "";
      for(i=0; i < clm.length; i++){
         v += "[contains(concat(' ', @"+clc+", ' '), ' " + base[i] + " ')]";
      }
      c = document.evaluate("./"+"/"+"*" + v, parent, null, 5, null);
      while ((node = c.iterateNext())) {
          m.push(node);
      }
   }else{                  // MSIE which doesn't understand XPATH
      v = elm.getElementsByTagName('*');
      bcl = "";
      for(i=0; i < clm.length; i++){
          bcl += (i)? "|":"";
          bcl += "\\b"+clm[i]+"\\b";
      }
      re = new RegExp(bcl, "gi");
      for(i = 0; i < v.length; i++){
         if(v.className){
             rm = v[i].className.match(bcl);
             if(rm && rm.length){      // sometimes .match returns an empty array so you cannot use just 'if(rm)'
                 m.push(v[i])
             }
         }
      }
    }
    return m;
}

, XPATH, RegExp (, .indexOf, ),

Answer 5

, , , , . .

function $class(className) {
    var children = document.getElementsByTagName('*') || document.all;
    var i = children.length, e = [];
    while (i--) {
        var classNames = children[i].className.split(' ');
        var j = classNames.length;
        while (j--) {
            if (classNames[j] == className) {
                e.push(children[i]);
                break;
            }
        }
    }
    return e;
}

Answer 6

getElementsByClassName() :

function getbyclass(n){
  var elements = document.getElementsByTagName("*");
  var result = [];
  for(z=0;z<elements.length;z++){
    if(elements[z].getAttribute("class") == n){
      result.push(elements[z]);
    }
  }
  return result;
}

:

getbyclass("description") // Instead of document.getElementsByClassName("description")