-
1.
var div = document.getElementById('d1');
div.setAttribute("class", "abc");
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2.
var div = document.getElementById('d1');
div.setAttribute("className", "abc");
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3.
var div = document.getElementById('d1');
div.setAttribute("className", "abc");
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4.
var imgdiv = document.createElement("div");
imgdiv.className = "imgdiv";
imgdiv.style.width = "50%";
imgdiv.style.height = "50%";
imgdiv.style.float = "left";
var img = document.createElement("img");
img.src = src;
img.style.width = '100%';
prvbox.appendChild(imgdiv).appendChild(img);