HPバー色変更編（アニメーション） PHPポケモン53

// ==============================================
// HPバーの処理 =================================
//
/**
* HPバーのアニメーションを実行
* @param string target
* @param mixed param
* @param now element
* @return Promise
**/
var doAnimateHpBar = function(target, param){
    return new Promise((resolve, reject) => {
        // 対象のHPバーを取得
        var hpbar = $('#hpbar-' + target);
        var hp = hpbar.attr('aria-valuenow') - param;
        // 最小値の処理
        if(hp < 0){
            hp = 0;
        }
        // 最大値の処理
        if(hp > hpbar.attr('aria-valuemax')){
            hp = hpbar.attr('aria-valuemax');
        }
        // 処理後のHPバーの長さを算出
        var width = hp / hpbar.attr('aria-valuemax') * 100;
        // 非同期1
        var promise1 = new Promise((resolve, reject) => {
            // 長さを変更
            hpbar.animate({
                width: width + "%"
            }, {
                duration: 500,
                easing: 'easeOutQuad',
                complete: function(){
                    // 処理完了(css変更のズレがあるため0.5秒後にresolveを返却)
                    if(target === 'friend'){
                        // HPバーの色チェック
                        hpbar.removeClass('bg-success bg-warning bg-danger');
                        if(width <= 20){
                            hpbar.addClass('bg-danger');
                        }else if(width <= 50){
                            hpbar.addClass('bg-warning');
                        }else{
                            hpbar.addClass('bg-success');
                        }
                    }
                    setTimeout(function() {
                        resolve();
                    }, 500);
                }
            });
        });
        // 非同期2
        var promise2 = new Promise( async (resolve, reject) => {
            // HPカウンターのアニメーション
            if(target === 'friend'){
                // 引数は数値でセット
                await countHp(
                    parseInt(hpbar.attr('aria-valuenow'), 10),
                    parseInt(hp, 10)
                );
            }
            return resolve();
        });
        Promise.all([promise1, promise2]).then(() => {
            // 残HPの値を変更
            hpbar.attr('aria-valuenow', hp);
            return resolve();
        });
        // ==============================================
    });
}