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index.js
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index.js
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/* eslint-disable no-undef */
'use strict';
// convert to json
export const toJSON =(node) =>{
node = node || this;
let obj = {
nodeType: node.nodeType
};
if (node.tagName) {
obj.tagName = node.tagName.toLowerCase();
} else
if (node.nodeName) {
obj.nodeName = node.nodeName;
}
if (node.nodeValue) {
obj.nodeValue = node.nodeValue;
}
let attrs = node.attributes;
let childNodes = node.childNodes;
let length;
let arr;
if (attrs) {
length = attrs.length;
arr = obj.attributes = new Array(length);
for (let i = 0; i < length; i++) {
const attr = attrs[i];
arr[i] = [attr.nodeName, attr.nodeValue];
}
}
if (childNodes) {
length = childNodes.length;
arr = obj.childNodes = new Array(length);
for (let i = 0; i < length; i++) {
arr[i] = toJSON(childNodes[i]);
}
}
return obj;
}
// consvert json to dom
export const toDOM = (obj) => {
if (typeof obj == 'string') {
obj = JSON.parse(obj);
}
let node, nodeType = obj.nodeType;
switch (nodeType) {
case 1: //ELEMENT_NODE
node = document.createElement(obj.tagName);
let attributes = obj.attributes || [];
for (let i = 0, len = attributes.length; i < len; i++) {
const attr = attributes[i];
node.setAttribute(attr[0], attr[1]);
}
break;
case 3: //TEXT_NODE
// eslint-disable-next-line no-undef
node = document.createTextNode(obj.nodeValue);
break;
case 8: //COMMENT_NODE
node = document.createComment(obj.nodeValue);
break;
case 9: //DOCUMENT_NODE
node = document.implementation.createDocument();
break;
case 10: //DOCUMENT_TYPE_NODE
node = document.implementation.createDocumentType(obj.nodeName);
break;
case 11: //DOCUMENT_FRAGMENT_NODE
node = document.createDocumentFragment();
break;
default:
return node;
}
if (nodeType == 1 || nodeType == 11) {
const childNodes = obj.childNodes || [];
for (let i = 0, len = childNodes.length; i < len; i++) {
node.appendChild(toDOM(childNodes[i]));
}
}
return node;
}
// convert htmlnode to string
export const outerHTML = (node) =>{
return node.outerHTML || new XMLSerializer().serializeToString(node);
}