javascript - setTimeout to JS function inside another one -

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i'm looking add settimeout js function inside function have one, i'm aware can use onclick=settimeout"(foobar(), 2500);" there's loader inside function, make clear, i'd execute function instantly (show loader div) when button clicked settimout 2500 ms before running $.getjson. let's want add fake timeout api request because stuff blazing fast.

also, please let me know if loading animation method js ok, think it's lines of code show/hide div. i'm sure there's better way handle this. thanks.

<html>    <head>  <meta http-equiv="content-type" content="text/html; charset=utf-8">    <title>js loader</title>    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>  </head>    <body>    <style type="text/css" id="style">        #myloader {    position: relative;    left: 50%;    top: 50%;    z-index: 1;    width: 150px;    height: 150px;    margin: 25% -50;    border: 16px solid #000;    border-radius: 50%;    border-top: 16px solid #3498db;    width: 120px;    height: 120px;    -webkit-animation: spin 2s linear infinite;    animation: spin 2s linear infinite;  }    @-webkit-keyframes spin {    0% { -webkit-transform: rotate(0deg); }    100% { -webkit-transform: rotate(360deg); }  }    @keyframes spin {    0% { transform: rotate(0deg); }    100% { transform: rotate(360deg); }  }    /* add animation "page content" */  .animate-bottom {    position: relative;    -webkit-animation-name: animatebottom;    -webkit-animation-duration: 1s;    animation-name: animatebottom;    animation-duration: 1s  }    @-webkit-keyframes animatebottom {    { bottom:-100px; opacity:0 }     { bottom:0px; opacity:1 }  }    @keyframes animatebottom {     from{ bottom:-100px; opacity:0 }     to{ bottom:0; opacity:1 }  }    #mydiv {    display: none;    text-align: center;  }  </style>      <div class="container container-table">  <div class="row vertical-center-row">      <div class="col-md-4 col-md-offset-4">        <h1 id="name" >real-time bitcoin price</h1>        <div id="myloader"style="display: none;"></div>        <p id="cointime"></p>      <div id="dollar"></div>      <div id="gbp"></div>      <div id="euro"></div><br>        <button id="refreshbtn" class="btn btn-primary">load data</button>          </div>    </div>  </div>    <script type="text/javascript">      document.getelementbyid("refreshbtn").addeventlistener("click", function () {        var x = document.getelementbyid('myloader');      if (x.style.display === 'none') {          x.style.display = 'block';      } else {          x.style.display = 'none';      }      $.getjson("https://api.coindesk.com/v1/bpi/currentprice.json", function (data) {            var x = document.getelementbyid('myloader');      if (x.style.display === 'none') {          x.style.display = 'block';      } else {          x.style.display = 'none';      }        $("#cointime").text(data.time.updated);        $("#dollar").text("usd : " + '  ' + data.bpi.usd.rate);        $("#gbp").text("gbp : " + '  ' + data.bpi.gbp.rate);        $("#euro").text("eur :" + '  ' + data.bpi.eur.rate);    })  });      </script>       <script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>    </body>  </html>

to delay ajax request wrap $.getjson call in settimeout(). note you're using odd mix of jquery , native js functions. i'd suggest using 1 or other, this:

$("#refreshbtn").on("click", function() {    $('#myloader').show();      settimeout(function() {      $.getjson("https://api.coindesk.com/v1/bpi/currentprice.json", function(data) {        $('#myloader').hide()        $("#cointime").text(data.time.updated);        $("#dollar").text("usd : " + '  ' + data.bpi.usd.rate);        $("#gbp").text("gbp : " + '  ' + data.bpi.gbp.rate);        $("#euro").text("eur :" + '  ' + data.bpi.eur.rate);      })    }, 2500);  });
#myloader {    position: relative;    left: 50%;    top: 50%;    z-index: 1;    width: 150px;    height: 150px;    margin: 25% -50;    border: 16px solid #000;    border-radius: 50%;    border-top: 16px solid #3498db;    width: 120px;    height: 120px;    -webkit-animation: spin 2s linear infinite;    animation: spin 2s linear infinite;  }    @-webkit-keyframes spin {    0% {      -webkit-transform: rotate(0deg);    }    100% {      -webkit-transform: rotate(360deg);    }  }    @keyframes spin {    0% {      transform: rotate(0deg);    }    100% {      transform: rotate(360deg);    }  }      /* add animation "page content" */    .animate-bottom {    position: relative;    -webkit-animation-name: animatebottom;    -webkit-animation-duration: 1s;    animation-name: animatebottom;    animation-duration: 1s  }    @-webkit-keyframes animatebottom {    {      bottom: -100px;      opacity: 0    }    {      bottom: 0px;      opacity: 1    }  }    @keyframes animatebottom {    {      bottom: -100px;      opacity: 0    }    {      bottom: 0;      opacity: 1    }  }    #mydiv {    display: none;    text-align: center;  }
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">  <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>  <script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>  <div class="container container-table">    <div class="row vertical-center-row">      <div class="col-md-4 col-md-offset-4">        <h1 id="name">real-time bitcoin price</h1>        <div id="myloader" style="display: none;"></div>        <p id="cointime"></p>        <div id="dollar"></div>        <div id="gbp"></div>        <div id="euro"></div><br>        <button id="refreshbtn" class="btn btn-primary">load data</button>      </div>    </div>  </div>

also i'd suggest adding 2.5 second delay far much. i'm aware adding slight delay make more obvious data has loaded idea ux, i'd 500ms more enough.





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