how to insert element in body and get the width in javascript code example
Example 1: add 10px to width js
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JavaScript Increasing and Decreasing Image Size</title>
<style>
button{
padding: 3px 6px;
}
button img{
vertical-align: middle;
}
</style>
<script>
function zoomin(){
var myImg = document.getElementById("sky");
var currWidth = myImg.clientWidth;
if(currWidth == 500){
alert("Maximum zoom-in level reached.");
} else{
myImg.style.width = (currWidth + 50) + "px";
}
}
function zoomout(){
var myImg = document.getElementById("sky");
var currWidth = myImg.clientWidth;
if(currWidth == 50){
alert("Maximum zoom-out level reached.");
} else{
myImg.style.width = (currWidth - 50) + "px";
}
}
</script>
</head>
<body>
<p>
<button type="button" onclick="zoomin()"><img src="/examples/images/zoom-in.png"> Zoom In</button>
<button type="button" onclick="zoomout()"><img src="/examples/images/zoom-out.png"> Zoom Out</button>
</p>
<img src="/examples/images/sky.jpg" id="sky" width="250" alt="Cloudy Sky">
</body>
</html>
Example 2: javascript add div to body with class
var MainDiv = document.createElement('div');
var ChildDiv1 = MainDiv.createElement('div');
ChildDiv1.className = 'contextmenu_contextMenu_3_a2Z contextmenu_ContextMenuFocusContainer_2thYU';
ChildDiv1.tabIndex = "0";
ChildDiv1.style = "visibility: visible; bottom: 56px; right: 68px;"
var ChildDiv2 = ChildDiv1.createElement('div');
ChildDiv1.className = 'contextmenu_contextMenuContents_1yyTu';
var DivButton1 = ChildDiv2.createElement('div');
DivButton1.className = 'contextmenu_contextMenuItem_CBC-y contextMenuItem';
DivButton1.value = "Upload an Image";
var DivButton2 = ChildDiv2.createElement('div');
DivButton2.className = 'contextmenu_contextMenuItem_CBC-y contextMenuItem';
DivButton2.value = "Share Your Trade Offer URL";
document.body.appendChild(MainDiv);