题解 | #虚拟DOM#
虚拟DOM
https://www.nowcoder.com/practice/a283d2c284ed49468c3b0f6ec0312b0f
const _createElm = (vnode) => {
vnode.tag && !vnode.text
? (vnode.tagNode = document.createElement(vnode.tag))
: (vnode.tagNode = document.createTextNode(vnode.text));
if (Object.keys(vnode.props).length) {
for (const key in vnode.props) {
vnode.tagNode.setAttribute(key, vnode.props[key]);
}
}
if (vnode.children.length) {
vnode.children.forEach((cnode) => {
vnode.tagNode.appendChild(_createElm(cnode));
});
}
return vnode.tagNode;
};
