ishank-dev/ChangeCSSwithJS.js

## ChangeCSSwithJS.js
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- CSS only -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css" integrity="sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk" crossorigin="anonymous">
    <title>Document</title>

</head>
<body>
    <br>
    <br>
    <br>
    <div class = 'container'>
    <div class="row">
        <div class="col-sm-3">
            <div>
                <legend>Text</legend>
                <hr>
                <div>
                    <label for="family">Font: </label>
                    <select autocomplete="off" name="font-family" id="family" onchange="applyCSS()">
                        <option value="serif">Serif</option>
                        <option selected value="Georgia, serif">Georgia</option>
                        <option value="'cursive">Cursive</option>
                        <option value="'Times New Roman', Times, 'Roboto Slab', serif">Times New Roman</option>
                        <option value="sans-serif">Sans-serif</option>
                        <option value="Arial, Helvetica, sans-serif">Arial</option>
                        <option value="monospace">monospace</option>
                        <option value="'Courier New', Courier, monospace">Courier</option>
                    </select>
                </div>
                <label for="size">Font Size: </label>
                <select autocomplete="off" name="font-size" id="size" onchange="applyCSS()">
                    <option value="xx-small">Smallest</option>
                    <option value="x-small">Smaller</option>
                    <option value="small">Small</option>
                    <option selected value="medium">Medium</option>
                    <option value="large">Large</option>
                    <option value="x-large">Larger</option>
                    <option value="xx-large">Largest</option>
                </select>
            </div>


            <div>
                <label for="color">Color: </label>
                <input autocomplete="off" type="color" name="color" id="color" onchange="applyCSS()" value="#000000">
            </div>
            <div>
                <label for="background">Background Color: </label>
                <input autocomplete="off" type="color" name="background-color" id="background" onchange="applyCSS()" value="#ffffff">
            </div>

            <div>
                <label for="lineheight">Line Spacing: </label>
                <select autocomplete="off" name="lineheight" id="lineheight" onchange="applyCSS()">
                    <option value="1">1</option>
                    <option value="2" selected>2</option>
                    <option value="3">3</option>
                    <option value="4">4</option>
                </select>
            </div>

            <div>
                <label for="margin">Margin: </label>
                <select autocomplete="off" name="margin" id="margin" onchange="applyCSS()">
                    <option selected value="1em">1</option>
                    <option value="2em">2</option>
                    <option value="3em">3</option>
                    <option value="4em">4</option>
                </select>

            </div>
        </div>
        <div class="col-sm-6">
                <legend>Controlling CSS attributes with javascript </legend>
                <hr>
                <div id = 'css' ;>
                    <strong>font-family</strong>:Georgia, serif;<br>
                    <strong>font-size</strong>:medium;<br>
                    <strong>color</strong>:#000000;<br>
                    <strong>background-color</strong>:#ffffff;<br>
                    <strong>lineheight</strong>:3;<br>
                    <strong>margin</strong>:1em;<br>
                </div>
        </div>

    </div>
    <div id = 'canvas'>
        <h3>Heading</h3>
        <h4>SubHeading</h4>
        <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum a paragraph</p>
        <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum a paragraph</p>
    </div>
    </div>
</body>
</html>
<script>
    calcID = function(i) {
    return document.getElementById(i);
}

cssDict = {
    'font-family': calcID("family"),
    'font-size': calcID("size"),
    'color': calcID("color"),
    'background-color': calcID("background"),
    'line-height': calcID("lineheight"),
    'margin': calcID("margin")
}
applyCSS = function() {
    var str = ''
    canvas = document.getElementsByClassName('canvas');
    for (var i in cssDict) {
        document.getElementById('canvas').style.cssText+= cssDict[i].name+':'+cssDict[i].value;
        console.log(cssDict[i].name+':'+cssDict[i].value+';' );
        str += '<strong>'+cssDict[i].name+'</strong>'+':'+cssDict[i].value+';'+'<br>'+'</h5>'
    }
    document.getElementById('css').innerHTML = str

}

</script>
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<!-- CSS only -->
	<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css" integrity="sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk" crossorigin="anonymous">
	<title>Document</title>

	</head>
	<body>
	<br>
	<br>
	<br>
	<div class = 'container'>
	<div class="row">
	<div class="col-sm-3">
	<div>
	<legend>Text</legend>
	<hr>
	<div>
	<label for="family">Font: </label>
	<select autocomplete="off" name="font-family" id="family" onchange="applyCSS()">
	<option value="serif">Serif</option>
	<option selected value="Georgia, serif">Georgia</option>
	<option value="'cursive">Cursive</option>
	<option value="'Times New Roman', Times, 'Roboto Slab', serif">Times New Roman</option>
	<option value="sans-serif">Sans-serif</option>
	<option value="Arial, Helvetica, sans-serif">Arial</option>
	<option value="monospace">monospace</option>
	<option value="'Courier New', Courier, monospace">Courier</option>
	</select>
	</div>
	<label for="size">Font Size: </label>
	<select autocomplete="off" name="font-size" id="size" onchange="applyCSS()">
	<option value="xx-small">Smallest</option>
	<option value="x-small">Smaller</option>
	<option value="small">Small</option>
	<option selected value="medium">Medium</option>
	<option value="large">Large</option>
	<option value="x-large">Larger</option>
	<option value="xx-large">Largest</option>
	</select>
	</div>


	<div>
	<label for="color">Color: </label>
	<input autocomplete="off" type="color" name="color" id="color" onchange="applyCSS()" value="#000000">
	</div>
	<div>
	<label for="background">Background Color: </label>
	<input autocomplete="off" type="color" name="background-color" id="background" onchange="applyCSS()" value="#ffffff">
	</div>

	<div>
	<label for="lineheight">Line Spacing: </label>
	<select autocomplete="off" name="lineheight" id="lineheight" onchange="applyCSS()">
	<option value="1">1</option>
	<option value="2" selected>2</option>
	<option value="3">3</option>
	<option value="4">4</option>
	</select>
	</div>

	<div>
	<label for="margin">Margin: </label>
	<select autocomplete="off" name="margin" id="margin" onchange="applyCSS()">
	<option selected value="1em">1</option>
	<option value="2em">2</option>
	<option value="3em">3</option>
	<option value="4em">4</option>
	</select>

	</div>
	</div>
	<div class="col-sm-6">
	<legend>Controlling CSS attributes with javascript </legend>
	<hr>
	<div id = 'css' ;>
	<strong>font-family</strong>:Georgia, serif;<br>
	<strong>font-size</strong>:medium;<br>
	<strong>color</strong>:#000000;<br>
	<strong>background-color</strong>:#ffffff;<br>
	<strong>lineheight</strong>:3;<br>
	<strong>margin</strong>:1em;<br>
	</div>
	</div>

	</div>
	<div id = 'canvas'>
	<h3>Heading</h3>
	<h4>SubHeading</h4>
	<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum a paragraph</p>
	<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum a paragraph</p>
	</div>
	</div>
	</body>
	</html>
	<script>
	calcID = function(i) {
	return document.getElementById(i);
	}

	cssDict = {
	'font-family': calcID("family"),
	'font-size': calcID("size"),
	'color': calcID("color"),
	'background-color': calcID("background"),
	'line-height': calcID("lineheight"),
	'margin': calcID("margin")
	}
	applyCSS = function() {
	var str = ''
	canvas = document.getElementsByClassName('canvas');
	for (var i in cssDict) {
	document.getElementById('canvas').style.cssText+= cssDict[i].name+':'+cssDict[i].value;
	console.log(cssDict[i].name+':'+cssDict[i].value+';' );
	str += '<strong>'+cssDict[i].name+'</strong>'+':'+cssDict[i].value+';'+'<br>'+'</h5>'
	}
	document.getElementById('css').innerHTML = str

	}

	</script>