<p><span style="font-family: Menlo, Monaco, Consolas, &quot;Andale Mono&quot;, &quot;lucida console&quot;, &quot;Courier New&quot;, monospace; font-size: 13.2px; background-color: rgb(255, 255, 255);">function myFunction(){</span><br/><span style="font-family: Menlo, Monaco, Consolas, &quot;Andale Mono&quot;, &quot;lucida console&quot;, &quot;Courier New&quot;, monospace; font-size: 13.2px; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;var x;</span><br/><span style="font-family: Menlo, Monaco, Consolas, &quot;Andale Mono&quot;, &quot;lucida console&quot;, &quot;Courier New&quot;, monospace; font-size: 13.2px; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;var r=confirm(&quot;按下按钮!&quot;);</span><br/><span style="font-family: Menlo, Monaco, Consolas, &quot;Andale Mono&quot;, &quot;lucida console&quot;, &quot;Courier New&quot;, monospace; font-size: 13.2px; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;if (r==true){</span><br/><span style="font-family: Menlo, Monaco, Consolas, &quot;Andale Mono&quot;, &quot;lucida console&quot;, &quot;Courier New&quot;, monospace; font-size: 13.2px; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;x=&quot;你按下了\&quot;确定\&quot;按钮!&quot;;</span><br/><span style="font-family: Menlo, Monaco, Consolas, &quot;Andale Mono&quot;, &quot;lucida console&quot;, &quot;Courier New&quot;, monospace; font-size: 13.2px; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;}</span><br/><span style="font-family: Menlo, Monaco, Consolas, &quot;Andale Mono&quot;, &quot;lucida console&quot;, &quot;Courier New&quot;, monospace; font-size: 13.2px; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;else{</span><br/><span style="font-family: Menlo, Monaco, Consolas, &quot;Andale Mono&quot;, &quot;lucida console&quot;, &quot;Courier New&quot;, monospace; font-size: 13.2px; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;x=&quot;你按下了\&quot;取消\&quot;按钮!&quot;;</span><br/><span style="font-family: Menlo, Monaco, Consolas, &quot;Andale Mono&quot;, &quot;lucida console&quot;, &quot;Courier New&quot;, monospace; font-size: 13.2px; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;}</span><br/><span style="font-family: Menlo, Monaco, Consolas, &quot;Andale Mono&quot;, &quot;lucida console&quot;, &quot;Courier New&quot;, monospace; font-size: 13.2px; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;document.getElementById(&quot;demo&quot;).innerHTML=x;</span><br/><span style="font-family: Menlo, Monaco, Consolas, &quot;Andale Mono&quot;, &quot;lucida console&quot;, &quot;Courier New&quot;, monospace; font-size: 13.2px; background-color: rgb(255, 255, 255);">}</span></p>