未捕获的ReferenceError:未定义mqtt
我尝试运行的代码在HTML文件中:
HTML
<script>
require(["https://unpkg.com/[email protected]/dist/mqtt.min.js"], function (mqtt) {
console.log("Libraries loaded");
})
</script>
<script src="../text-to-speech/sub_mqtt.js"></script>
sub_mqtt
//MQTT Connection
function mqtt_connect() {
//var mqtt = require('mqtt'); // Should I use it?
var client = mqtt.connect({ host: 'test', port: port })
var topic = 'mytopic'
client.on('message', (topic, message) => {
});
client.on('connect', () => {
client.subscribe(topic);
console.log("Connected!")
});
};
mqtt_connect();
[我知道,如果我将此代码复制到第一个script
回调中,则可以解决该错误,但是我想在另一个文件中进行操作以避免HTML过于拥挤。
为了确保在mqtt加载后将执行代码,您必须将其作为回调传递给RequireJS。首先,将您的HTML代码修改为: