HeadingElement.h4 构造函数
实现
factory HeadingElement.h4() => JS<HeadingElement>(
'returns:HeadingElement;creates:HeadingElement;new:true',
'#.createElement(#)',
document,
"h4");
factory HeadingElement.h4() => JS<HeadingElement>(
'returns:HeadingElement;creates:HeadingElement;new:true',
'#.createElement(#)',
document,
"h4");