CODE EXAMPLE FOR JAVASCRIPT

how to set height dynamically in jquery

// Calculate height according to the div width
$(function() {
  var myDivWidth = $(".main-div").css("width") + "px";
  // the variable will now have our div width
  $(".main-div").css("height", myDivWidth)
  // Another Way
  $(".main-div").css({
    "height": myDivWidth
  })
})