onclick function scope problems, is this when I need dojo/on ?

JamesHone1

Hi Im trying to attach an onclick functoion to a checkbox.

My initial attempt was this, which worked fine

				checkbox<SPAN class="punctuation token">.</SPAN>onclick <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">function</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">{</SPAN>
					console<SPAN class="punctuation token">.</SPAN><SPAN class="token function">log</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"called"</SPAN><SPAN class="punctuation token">)</SPAN>
					<SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">this</SPAN><SPAN class="punctuation token">.</SPAN>checked<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">{</SPAN>
						total <SPAN class="operator token">+</SPAN><SPAN class="operator token">=</SPAN> <SPAN class="token function">parseFloat</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">this</SPAN><SPAN class="punctuation token">.</SPAN>value<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
					<SPAN class="punctuation token">}</SPAN>
					<SPAN class="keyword token">else</SPAN><SPAN class="punctuation token">{</SPAN>
						total <SPAN class="operator token">-</SPAN><SPAN class="operator token">=</SPAN> <SPAN class="token function">parseFloat</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">this</SPAN><SPAN class="punctuation token">.</SPAN>value<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
					<SPAN class="punctuation token">}</SPAN>
					console<SPAN class="punctuation token">.</SPAN><SPAN class="token function">log</SPAN><SPAN class="punctuation token">(</SPAN>total<SPAN class="punctuation token">)</SPAN>
				<SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">;</SPAN>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>