Javascript/className

解説 class属性追加、削除

sample1

sample1p

sample1code

var sample1p = document.getElementById("sample1p");
function s1Func01(){
  sample1p.className = "s1Class";
}
function s1Func02(){
  sample1p.className = "";
}

sample2

sample2p

sample2code

var s2Flg = 0;
function s2Func(){
  var s2p = document.getElementById("s2p");
  if(s2Flg == 0){
  	s2p.className = "s2Class";
  	s2Flg = 1;
  } else {
  	s2p.className = "";
  	s2Flg = 0;
  }
}