The first commented line is your dabblet’s title

dabblet.css

/**
 * The first commented line is your dabblet’s title
 */

background: #f06;
background: linear-gradient(45deg, #f06, yellow);
min-height: 100%;

dabblet.html

<style type="text/css">.aaa {line-height:250px;border:#999999 dashed 1px;}
.aaa a{display:inline-block;vertical-align: middle;line-height:1.5em;font-size:12px} 
</style><p class="aaa"><a>这里是高度为150像素的标签内的多行文字，文字大小为20像素。<br />这里是第二行，用来测试多行的显示效果。</a> </p>

dabblet.js

// alert('Hello world!');
function onkeypress_callback(evt) {      
var eType = evt.type; // Will return "keypress" as the event type     
 var eCode = 'keyCode is ' + evt.keyCode;     
  var eChar = 'charCode is ' + evt.charCode;      
  alert ("Captured Event (type=" + eType + ", key Unicode value=" + eCode + ", ASCII value=" + eChar + ")");   }

settings.json

{"view":"split","fontsize":"100","seethrough":"","prefixfree":"1","page":"html"}