写html时这样绑定
<input type="text" name="address4" id="address4" onFocus="open1(this);">
函数则加一个对象

function open1(ob)
{
  var id=$(ob).attr("id");
  alert(id);
}

<a href="javascript:saveForm(this)" class="save" id="id_save">全部保存</a>

<a href="javascript:void(0)" class="save" id="id_save" onclick="saveForm(this)">全部保存</a>

function open1(){
  var id=$(this).attr("id");
  console.log(id);
}

$("input[name^=‘address‘]").on("focus",open1);