//c_开头的js变量是服务器传过来的var c_access_token = "<?=$access_token?>";var c_log_url = ‘<?=site_url("log/index")?>‘;var c_download_url = ‘<?=site_url("download/index")?>‘;var c_timestamp = ‘<?=$timestamp?>‘;var c_signature = ‘<?=$signature?>‘;var c_noncestr = ‘<?=$noncestr?>‘;var log_msg = function(msg){    $.post(c_log_url, {msg:msg});        }  wx.config({      debug: false, // 开启调试模式,调用的所有api的返回值会在客户端log_msg出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。      appId: ‘wx693f4c620712348b‘, // 必填，公众号的唯一标识      timestamp: c_timestamp, // 必填，生成签名的时间戳      nonceStr: c_noncestr, // 必填，生成签名的随机串      signature: c_signature,// 必填，签名，见附录1      jsApiList: [// 必填，需要使用的JS接口列表，所有JS接口列表见附录2        ‘checkJsApi‘,        ‘hideMenuItems‘,        ‘showMenuItems‘,        ‘hideAllNonBaseMenuItem‘,        ‘showAllNonBaseMenuItem‘,        ‘translateVoice‘,        ‘startRecord‘,        ‘stopRecord‘,        ‘onRecordEnd‘,        ‘playVoice‘,        ‘pauseVoice‘,        ‘stopVoice‘,        ‘uploadVoice‘,        ‘downloadVoice‘,        ‘chooseImage‘,        ‘previewImage‘,        ‘uploadImage‘,        ‘downloadImage‘,        ‘getNetworkType‘,        ‘openLocation‘,        ‘getLocation‘,        ‘hideOptionMenu‘,        ‘showOptionMenu‘,        ‘closeWindow‘,        ‘scanQRCode‘      ]   });// 微信wx.error(function(res){  log_msg(‘验证失败‘);  alert(‘验证失败‘);});wx.ready(function(){    //1.检查扫一扫接口    document.querySelector(‘#scanQRCode‘).onclick = function() {        log_msg(‘检查api‘);        unvaild_api = [];        wx.checkJsApi({            jsApiList:[              ‘scanQRCode‘            ],            success:function(res){                log_msg(‘返回检查api的结果‘+JSON.stringify(res));                $.each(res.checkResult, function(k, v) {                    if (!v) {                        unvaild_api.push(k);                        return false;                    }                });                if (unvaild_api.length > 0) {                    log_msg(‘存在无效api‘+unvaild_api.join(‘, ‘));                    log_msg(‘存在无效api的结果‘+unvaild_api.join(‘, ‘));                    return false;                }                //2.扫一扫接口                wx.scanQRCode({                    needResult:1, // 默认为0，扫描结果由微信处理，1则直接返回扫描结果                    success: function (res) {                        //结果                        alert(res.resultStr);                    }                });            }        });    }});