javascript - Static HTML or generate Dynamic HTML | performance -


i want know method faster/better , why.

i have web app. has lot of html tags like:

<div id="info-view">    <h3 class="h3-title">info</h3>    <div class="card">      <h4>version</h4>      <div class="version">        <p class="list-item">app version: <span id="app-vr"></span>        ...so on      </div>    </div>  </div>    <div id="import-view">    <h3 class="h3-title">import</h3>    <div class="card">      <h4>import list</h4>      <div id="import-container">        <div class="import-data">          <p class="import-name">data bla blabla</p>        </div>        <div class="import-data">          ...        </div>        ...      </div>    </div>  </div>      <!-- , lot of other view container these...online-view...setting-view... -->

and everytime need view shown, put style.display current 1 'none' , view need 'block'.

now question is: better generate div-blocks in javascript? like: 

    // remove current content dom      while(document.body.firstchild) {        document.body.firstchild.remove();      }      // generate new content      var infoview = document.createelement("div");      infoview.id = "info-view";        var title = document.createelement("h3");      title.classlist.add("he-title");      title.textcontent = "info";      ...      // add dom      document.body.appendchild(infoview);

if need view remove current 1 completly dom , generate new 1 , display it.

which 1 better performance/readability/code maintenance ?

because in code lot dom.

you can use https://jsperf.com check dom manipulation performance.

for case performace measurement shows adding/removing elements faster operation showing/hiding in chrome.

you can rerun test in different browsers measure operation , create different flows based on browser type use better alternative.

enter image description here https://jsperf.com/show-hide-or-add-removes


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