{"code":"\n<h2 id=\"h2\"> DrHuang First JavaScript 黄博士第一个程序\n</h2>\n\n<button onclick=\"myFunction()\"> display time 显示时间 Change color 改变颜色\n</button>\n\n<button type=\"button\"\nonclick=\"setInterval('myFunction()',1000)\">\nauto refresh time 自动刷新时间 Change color 改变颜色\n</button>\n\n<script>\nfunction myFunction() {\n  var x = document.getElementById(\"h2\");\n  x.style.fontSize = \"40px\"; \n  x.style.color = \"red\"; \n  document.getElementById('demo').innerHTML = Date();\n}\n</script> \n\n<p id=\"demo\"></p>\n\nLaTeX is between $$ x^6 $$\n\n"}