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<!DOCTYPE html>
<!-- THIS IS A SMAPLE OF USING 'DOM' INSIDE JAVASCRIPT'-->
<html lang="en">
<head>
   <meta charset="UTF-8" />
   <title>WEB222</title>
   <style> 
      body { margin: 0 18%; }
   </style>
   <script>
		function doit(){
		    var addrParas = document.querySelector("#address").querySelectorAll("p"); 
			//var addrParas = document.getElementById("address").getElementsByTagName("p"); 

			// highlight paragraphs inside of the section with "address" div element: 
			for (var i = 0; i < addrParas.length; i++) {   
					addrParas[i].style.backgroundColor = "yellow"; 
			}
		}
		
		function tryit(){
		    var allParas = document.querySelectorAll("p");

			// highlight all paragraphs in the web page
			for (var i = 0; i < allParas.length; i++) {   
					allParas[i].style.backgroundColor = "lightgreen"; 
			}
		}
	</script>
</head>
<body>
   <h1>WEB222 - Accessing elements within an element (node)</h1>

   <p>Mail to: </p> 
   <div id="address"> 
       <p>70 The Pond Road</p> 
       <p>Toronto, ON</p>
   </div>

   <p>
      Highlight paragraphs inside of the section with "address" div element:<br> 
      <input type="button" onclick="doit()" value="Do it">
   </p>
   <hr>
   
   <p>
	  Highlight all paragraphs in the web page:<br>
      <input type="button" onclick="tryit()" value="Try it">
   </p>
   <hr>


   <!-- for view-source and download -->
   <br><p><a href='' download>Download</a></p>
</body>

</html>

View another examples Add Own solution

3.86

Daudi 120 points

                                    &lt;!DOCTYPE html&gt;
&lt;!-- THIS IS A SMAPLE OF USING 'DOM' INSIDE JAVASCRIPT'--&gt;
&lt;html lang=&quot;en&quot;&gt;
&lt;head&gt;
   &lt;meta charset=&quot;UTF-8&quot; /&gt;
   &lt;title&gt;WEB222&lt;/title&gt;
   &lt;style&gt; 
      body { margin: 0 18%; }
   &lt;/style&gt;
   &lt;script&gt;
		function doit(){
		    var addrParas = document.querySelector(&quot;#address&quot;).querySelectorAll(&quot;p&quot;); 
			//var addrParas = document.getElementById(&quot;address&quot;).getElementsByTagName(&quot;p&quot;); 

			// highlight paragraphs inside of the section with &quot;address&quot; div element: 
			for (var i = 0; i &lt; addrParas.length; i++) {   
					addrParas[i].style.backgroundColor = &quot;yellow&quot;; 
			}
		}
		
		function tryit(){
		    var allParas = document.querySelectorAll(&quot;p&quot;);

			// highlight all paragraphs in the web page
			for (var i = 0; i &lt; allParas.length; i++) {   
					allParas[i].style.backgroundColor = &quot;lightgreen&quot;; 
			}
		}
	&lt;/script&gt;
&lt;/head&gt;
&lt;body&gt;
   &lt;h1&gt;WEB222 - Accessing elements within an element (node)&lt;/h1&gt;

   &lt;p&gt;Mail to: &lt;/p&gt; 
   &lt;div id=&quot;address&quot;&gt; 
       &lt;p&gt;70 The Pond Road&lt;/p&gt; 
       &lt;p&gt;Toronto, ON&lt;/p&gt;
   &lt;/div&gt;

   &lt;p&gt;
      Highlight paragraphs inside of the section with &quot;address&quot; div element:&lt;br&gt; 
      &lt;input type=&quot;button&quot; onclick=&quot;doit()&quot; value=&quot;Do it&quot;&gt;
   &lt;/p&gt;
   &lt;hr&gt;
   
   &lt;p&gt;
	  Highlight all paragraphs in the web page:&lt;br&gt;
      &lt;input type=&quot;button&quot; onclick=&quot;tryit()&quot; value=&quot;Try it&quot;&gt;
   &lt;/p&gt;
   &lt;hr&gt;


   &lt;!-- for view-source and download --&gt;
   &lt;br&gt;&lt;p&gt;&lt;a href='' download&gt;Download&lt;/a&gt;&lt;/p&gt;
&lt;/body&gt;

&lt;/html&gt;
0

Thank you! 7

3.86 (7 Votes)

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