如何禁用titlediv_1274837 div中的所有输入、选择、文本区域

var titlediv_1274837 = document.getElementById("titlediv_1274837");
var inputs = titlediv_1274837.getElementsByTagName("input");
var selects = titlediv_1274837.getElementsByTagName("select");
var textareas = titlediv_1274837.getElementsByTagName("textarea");

for (var i = 0; i < inputs.length; i++) {
  inputs[i].disabled = true;
}

for (var i = 0; i < selects.length; i++) {
  selects[i].disabled = true;
}

for (var i = 0; i < textareas.length; i++) {
  textareas[i].disabled = true;
}

#titlediv_1274837 input,
#titlediv_1274837 select,
#titlediv_1274837 textarea {
  pointer-events: none;
}