How to set password visible on click of icon

Question

I have three input fields all of them are password fields what i am trying to do is to put and fontawesome icon inside the input field on click which shows or hide the password

currently i have this but with button,and its doing only for one field not for all three fields, do i have to call 3 different functions for all three or it can be done with same function

snippet

function show() {
  var a = document.getElementById("confirm_password");
  var b = document.getElementById("display2");
  if (a.type == "password") {
    a.type = "text";

  } else {
    a.type = "password";

  }
}

<div class="col-lg-3">
  <h5 id="commonHeader">Current Password</h5>
  <input type="password" id="currentPass" name="currentpass" class="commanClass" placeholder="Current Password">
  <button type="button" onclick="show()" id="display"></button>
</div>
<div class="col-lg-3">
  <h5 id="commonHeader">New Password</h5>
  <input type="password" id="newPass" name="newpass" required="required" class="commanClass" placeholder="Current Password">
  <button type="button" onclick="show()" id="display1"></button>

</div>
<div class="col-lg-3">
  <h5 id="commonHeader">Confirm Password</h5>
  <input type="password" id="confirm_password" required="required" placeholder="Confirm Password">
  <button type="button" onclick="show()" id="display2"></button>
</div>

<div>
  <hr>
  <br>
  <button type="submit" id="save" class="commonButton">Save</button>
  <button type="button" id="save" class="commonButton">Clear</button>
</div>

in my snippet i have 3 input fields to all of which i have to provide a icon on which if user click it will show the password of current field

Currently it is working for one field only

Answer 1

You can use removeAttribute to remove the type="password" and use setAttribute to set type as text simultaneously

function show(a) {
  var x=document.getElementById(a);
  var c=x.nextElementSibling
  if (x.getAttribute('type') == "password") {
  c.removeAttribute("class");
  c.setAttribute("class","fas fa-eye");
  x.removeAttribute("type");
    x.setAttribute("type","text");
  } else {
  x.removeAttribute("type");
    x.setAttribute('type','password');
 c.removeAttribute("class");
  c.setAttribute("class","fas fa-eye-slash");
  }
}

<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.1/css/all.css" integrity="sha384-fnmOCqbTlWIlj8LyTjo7mOUStjsKC4pOpQbqyi7RrhN7udi9RwhKkMHpvLbHG9Sr" crossorigin="anonymous">
<div class="col-lg-3">
  <h5 id="commonHeader">Current Password</h5>
  <input type="password" id="currentPass" name="currentpass" class="commanClass" placeholder="Current Password">
  <i onclick="show('currentPass')" class="fas fa-eye-slash" id="display"></i>
</div>
<div class="col-lg-3">
  <h5 id="commonHeader">New Password</h5>
  <input type="password" id="newPass" name="newpass" required="required" class="commanClass" placeholder="Current Password">
 <i onclick="show('newPass')" class="fas fa-eye-slash" id="display"></i>

</div>
<div class="col-lg-3">
  <h5 id="commonHeader">Confirm Password</h5>
  <input type="password" id="confirm_password" required="required" placeholder="Confirm Password">
 <i onclick="show('confirm_password')" class="fas fa-eye-slash" id="display"></i>
</div>

<div>
  <hr>
  <br>
  <button type="submit" id="save" class="commonButton">Save</button>
  <button type="button" id="save" class="commonButton">Clear</button>
</div>