let body = {
	tagName: 'body',
	paired: true,
	children: [
		{
			tagName: 'div',
			paired: true,
			children: [
				{
					tagName: 'span',
					paired: true,
					content: 'Enter a data please:'
				},
				{
					tagName: 'br',
					paired: false,
				},
				{
					tagName: 'input',
					paired: false,
					attrs: {
						id: 'name',
						type: 'text'
					}
				},
				{
					tagName: 'input',
					paired: false,
					attrs: {
						id: 'surname',
						type: 'text'
					}
				}
			]
		},
		{
			tagName: 'div',
			paired: true,
			children: [
				{
					tagName: 'button',
					paired: true,
					attrs: {
						id: 'ok'
					},
					content: 'OK'
				},
				{
					tagName: 'button',
					paired: true,
					attrs: {
						id: 'cancel'
					},
					content: 'Cancel'
				}
			]
		}
	]
}

alert(body.children[1].children[1].content);
alert(body.children[0].children[3].attrs.id);