<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script> <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!------ Include the above in your HEAD tag ----------> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/css/bootstrap.min.css"> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script> <div class="row" style="padding-left:3px"> <label id="agSabitDSLabel" class="col-12 col-lg-12 col-form-label fontlabel agSargiBilgileriInputLabel"> Height</label> <div class="col-3 col-lg-3"> <input id="agSabitDS" name="agSabitDS" type="number" max="999" min="0" required="" placeholder="" class="form-control form-control-sm fontinput agSargiBilgileriInput" value="12" onfocus="hiddenInputText(this.id)" onblur="showInputText(this.id)" onchange="valControl(this.id)"> <label id="wagSabitDS" style="position:absolute;top:12px;left:75px;font-size:10px;">mm</label> </div> </div> <div style="margin-left:550px"> <br> <span>Got a problem? Send me a mail</span> <br> <span style="text-align:center;">utkuudemr@gmail.com</span> </div>

function hiddenInputText(id) { debugger; var val = document.getElementById("w" + id).value; document.getElementById("w"+id).style.display = 'none'; } function showInputText(id) { debugger; var val = document.getElementById(id).value; if (val == "" || val == undefined) { document.getElementById("w" + id).style.display = 'none'; } else { document.getElementById("w" + id).style.display = 'block'; } } function valControl(id) { var s=document.getElementById(id).value; if(s>999) { document.getElementById(id).value=999; } if(s<0) { document.getElementById(id).value=0; } }