我是节点的新手，我正在尝试创建一个zendesk应用程序，当用户输入一个值时，该应用程序连接到mysql。这是app.js的代码。
( function() {
return {
events: {
// Framework Events
'app.created':'checkLocalStorage', // Call 'checkLocalStorage' function below
// Request Events (None)
// DOM events
'keyup #input-value-id': function(event){ // User clicked the 'enter'/'return' button so store value in localStorage
if(event.keyCode === 13) {
return this.processInputValue();
}
},
'click .reset': 'resetValue' // Call 'resetValue' function below
},
checkLocalStorage: function () { // Look in localStorage for if value is present for 'exampleString'
if (this.store('exampleString') === null) {
services.notify('localStorage value not set', 'alert', 500); // Services notification
this.switchTo('input_value'); // Display input field for user to set value of localStorage
} else { // There is a value already set for 'exampleString' in localStorage
services.notify('localStorage value found', 'notice', 500); // Services notification
var value = this.store('exampleString'); // Instantiate variable 'value' set to value in localStorage 'exampleString'
this.switchTo('display_value', { // Switch to 'displayValue' template
value: value // Set handlebars.js placeholder 'value' equal to the variable 'value' above
});
}
},
processInputValue: function() { // Handle value entered into input field in the 'inputValue' template
var exampleString = this.$('input#input-value-id').val(); // Variable set to value entered into input field
this.store('exampleString', exampleString); // Value of exampleString for future use
exampleString = this.$('input#input-value-id').val(''); // Empty input field - visual UX enhancement
services.notify('localStorage value set', 'notice', 500); // Services notification
var value = this.store('exampleString');
this.switchTo('display_value', {
value: value
});
var mysql = require('mysql');
var con = mysql.createConnection({
host: "localhost",
user: "root",
password: "WayPass123"
});
con.connect(function(err) {
if (err) throw err;
console.log("Connected!");
con.query("SELECT * FROM way0608.user_info", function (err, result, fields) {
if (err) throw err;
console.log(result);
});
});
},
resetValue: function() {
this.store('exampleString', null); // Set value of 'exampleString' in localStorage to 'empty' variable (null)
services.notify('localStorage value reset', 'notice', 500); // Services notification
this.switchTo('input_value'); // Display input field for user to set value of localStorage
}
};
}());
当我在自己的js文件中运行代码的mysql部分时，如下所示，它可以正常工作。
var mysql = require('mysql');
var con = mysql.createConnection({
host: "localhost",
user: "root",
password: "pass"
});
con.connect(function(err) {
if (err) throw err;
console.log("Connected!");
con.query("SELECT * FROM test.user_info", function (err, result, fields) {
if (err) throw err;
console.log(result);
});
});
但是，我只在zendesk上运行app.js时得到TypeError。我还测试了在zendesk上运行一个示例应用程序，它运行良好。这意味着有时mysql连接代码有问题。