Method cloneNode

packages/miniprogram-render/src/node/element.js:751–787

(deep)

    }

    cloneNode(deep) {
        const dataset = {}
        Object.keys(this.$_dataset).forEach(name => {
            dataset[`data-${tool.toDash(name)}`] = this.$_dataset[name]
        })

        const newNode = this.ownerDocument.$$createElement({
            tagName: this.$_tagName,
            attrs: {
                id: this.id,
                src: this.src,

                ...dataset,
                ...this.$$dealWithAttrsForCloneNode(),
            },
            nodeType: this.$_nodeType,
            nodeId: `b-${tool.getId()}`, // 运行时生成，使用 b- 前缀
        })

        newNode.$_style.$$clone(this.$_style)
        newNode.$_classList.$$clone(this.$_classList)

        // 属性
        if (this.$__attrs) {
            const attrsMap = this.$_attrs.map
            Object.keys(attrsMap).forEach(attrName => newNode.setAttribute(attrName, attrsMap[attrName]))
        }

        if (deep) {
            // 深克隆
            for (const child of this.$_children) {
                newNode.appendChild(child.cloneNode(deep))
            }
        }

        return newNode
    }

    appendChild(node) {
        if (!(node instanceof Node)) return