You are looking at the HTML representation of the JSON format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information.
{
	"query": {
		"namespaces": {
			"-2": {
				"id": -2,
				"*": "Media"
			},
			"-1": {
				"id": -1,
				"*": "Special"
			},
			"0": {
				"id": 0,
				"*": ""
			},
			"1": {
				"id": 1,
				"*": "Discuter",
				"subpages": ""
			},
			"2": {
				"id": 2,
				"*": "Utilisateur",
				"subpages": ""
			},
			"3": {
				"id": 3,
				"*": "Discussion Utilisateur",
				"subpages": ""
			},
			"4": {
				"id": 4,
				"*": "WikiDeveloppez"
			},
			"5": {
				"id": 5,
				"*": "Discussion WikiDeveloppez",
				"subpages": ""
			},
			"6": {
				"id": 6,
				"*": "Image"
			},
			"7": {
				"id": 7,
				"*": "Discussion Image",
				"subpages": ""
			},
			"8": {
				"id": 8,
				"*": "MediaWiki"
			},
			"9": {
				"id": 9,
				"*": "Discussion MediaWiki",
				"subpages": ""
			},
			"10": {
				"id": 10,
				"*": "Mod\u00e8le"
			},
			"11": {
				"id": 11,
				"*": "Discussion Mod\u00e8le",
				"subpages": ""
			},
			"12": {
				"id": 12,
				"*": "Aide"
			},
			"13": {
				"id": 13,
				"*": "Discussion Aide",
				"subpages": ""
			},
			"14": {
				"id": 14,
				"*": "Cat\u00e9gorie"
			},
			"15": {
				"id": 15,
				"*": "Discussion Cat\u00e9gorie",
				"subpages": ""
			}
		}
	}
}