var ken_json = {};
fetch("./assets/js/ken47.json").then(response => response.json()).then((data)=>{
	let ken = [];
	for (const key in data) {
		ken.push("<a href='#' onClick='c19(\"" + "https://hazard.yahoo.co.jp/article/covid19" + data[key].roman +"\")' onmouseover='c19_f(\"" + data[key].roman.toUpperCase() + "\",\"red\")'' onmouseout='c19_f(\"" + data[key].roman.toUpperCase() + "\",\"#fff\")'>" + data[key].name + "</a>");
	}
	document.getElementById("covid19-link-list").innerHTML = ken.join(",");
	for (const key in data) {
		document.getElementById(data[key].roman.toUpperCase()).setAttribute("fill","#fff");
	}
});

function c19(url){
	window.open(url,"_blank");
}
function c19_f(kenid,color){
	document.getElementById(kenid).setAttribute("fill",color);
}	

{
	"1": {
		"name": "北海道",
		"roman": "hokkaido"
	},
	"2": {
		"name": "青森",
		"roman": "aomori"
	},
	"3": {
		"name": "岩手",
		"roman": "iwate"
	},
	"4": {
		"name": "宮城",
		"roman": "miyagi"
	},
	"5": {
		"name": "秋田",
		"roman": "akita"
	},
	"6": {
		"name": "山形",
		"roman": "yamagata"
	},
	"7": {
		"name": "福島",
		"roman": "fukushima"
	},
	"8": {
		"name": "茨城",
		"roman": "ibaraki"
	},
	"9": {
		"name": "栃木",
		"roman": "tochigi"
	},
	"10": {
		"name": "群馬",
		"roman": "gunma"
	},
	"11": {
		"name": "埼玉",
		"roman": "saitama"
	},
	"12": {
		"name": "千葉",
		"roman": "chiba"
	},
	"13": {
		"name": "東京",
		"roman": "tokyo"
	},
	"14": {
		"name": "神奈川",
		"roman": "kanagawa"
	},
	"15": {
		"name": "新潟",
		"roman": "niigata"
	},
	"16": {
		"name": "富山",
		"roman": "toyama"
	},
	"17": {
		"name": "石川",
		"roman": "ishikawa"
	},
	"18": {
		"name": "福井",
		"roman": "fukui"
	},
	"19": {
		"name": "山梨",
		"roman": "yamanashi"
	},
	"20": {
		"name": "長野",
		"roman": "nagano"
	},
	"21": {
		"name": "岐阜",
		"roman": "gifu"
	},
	"22": {
		"name": "静岡",
		"roman": "shizuoka"
	},
	"23": {
		"name": "愛知",
		"roman": "aichi"
	},
	"24": {
		"name": "三重",
		"roman": "mie"
	},
	"25": {
		"name": "滋賀",
		"roman": "shiga"
	},
	"26": {
		"name": "京都",
		"roman": "kyoto"
	},
	"27": {
		"name": "大阪",
		"roman": "osaka"
	},
	"28": {
		"name": "兵庫",
		"roman": "hyogo"
	},
	"29": {
		"name": "奈良",
		"roman": "nara"
	},
	"30": {
		"name": "和歌山",
		"roman": "wakayama"
	},
	"31": {
		"name": "鳥取",
		"roman": "tottori"
	},
	"32": {
		"name": "島根",
		"roman": "shimane"
	},
	"33": {
		"name": "岡山",
		"roman": "okayama"
	},
	"34": {
		"name": "広島",
		"roman": "hiroshima"
	},
	"35": {
		"name": "山口",
		"roman": "yamaguchi"
	},
	"36": {
		"name": "徳島",
		"roman": "tokushima"
	},
	"37": {
		"name": "香川",
		"roman": "kagawa"
	},
	"38": {
		"name": "愛媛",
		"roman": "ehime"
	},
	"39": {
		"name": "高知",
		"roman": "kochi"
	},
	"40": {
		"name": "福岡",
		"roman": "fukuoka"
	},
	"41": {
		"name": "佐賀",
		"roman": "saga"
	},
	"42": {
		"name": "長崎",
		"roman": "nagasaki"
	},
	"43": {
		"name": "熊本",
		"roman": "kumamoto"
	},
	"44": {
		"name": "大分",
		"roman": "oita"
	},
	"45": {
		"name": "宮崎",
		"roman": "miyazaki"
	},
	"46": {
		"name": "鹿児島",
		"roman": "kagoshima"
	},
	"47": {
		"name": "沖縄",
		"roman": "okinawa"
	}
}

<?php
/*
Plugin Name: page404GO!!
Plugin URI: https://zip358.com/plugin/page404go.zip
Description: 404ページを任意のURLへ変換し遷移させる
Author: taoka toshiaki
Version: 1.0
Author URI: https://zip358.com/
*/
add_action( 'wp', function() {
    global $wp;
    $domain = get_option('domain404page')?get_option('domain404page'):"https://zip358.com/";
    if(is_404()){
        wp_redirect($domain.$wp->request);
        exit;
    }
 });
add_action('admin_menu','page404go_setting');
function page404go_setting(){
	add_options_page(
		'zip358.com：プラグイン',
		'404リダイレクト設定',
		'administrator',
		'page404go',
		function(){
            if(isset($_POST["domain404page"])){
                if(preg_match("/https?://.*/$/",$_POST["domain404page"])){
                    $url = $_POST["domain404page"];
                }elseif(preg_match("/https?://.*/",$_POST["domain404page"])){
                    $url = $_POST["domain404page"]."/";
                }else{
                    $url = "https://zip358.com/";
                }
                update_option('domain404page', wp_unslash($url));
            }
            ?>
            <form method="post" action="">
                <h2>リダイレクトドメイン指定</h2>
                <input type="text" style="width:350px" name="domain404page" value="<?=get_option('domain404page')?get_option('domain404page'):""?>" placeholder="https://zip358.com/">
                <?php submit_button(); ?>
            </form>
            <?php
        }
	);
}