TypeScript application-settings.hasKey函數代碼示例

export var testInvalidKey = function () {
    try {
        appSettings.hasKey(undefined);
        TKUnit.assert(false, "There is a key undefined");
    }
    catch (e) {
        // we should receive an exception here
    }

    try {
        appSettings.hasKey(null);
        TKUnit.assert(false, "There is a key null");
    }
    catch (e) {
        // we should receive an exception here
    }

    try {
        appSettings.hasKey(123);
        TKUnit.assert(false, "There is a key number");
    }
    catch (e) {
        // we should receive an exception here
    }

    appSettings.hasKey("string");
};

export var testClear = function () {
    // <snippet module="application-settings" title="application-settings">
    // ### Removing all values
    // ``` JavaScript
    appSettings.clear();
    // ```
    // </snippet>
    TKUnit.assert(!appSettings.hasKey(boolKey), "Failed to remove key: " + boolKey);
    TKUnit.assert(!appSettings.hasKey(stringKey), "Failed to remove key: " + stringKey);
    TKUnit.assert(!appSettings.hasKey(numberKey), "Failed to remove key: " + numberKey);
};

    constructor() {
        // >> app-settings-bool-code
        appSettings.setBoolean("isTurnedOn", true);
        this.isTurnedOn = appSettings.getBoolean("isTurnedOn", true);
        // << app-settings-bool-code

        // >> app-settings-string-code
        appSettings.setString("username", "Wolfgang");
        this.username = appSettings.getString("username");
        // << app-settings-string-code

        // >> app-settings-number-code
        appSettings.setNumber("locationX", 54.321);
        this.locationX = parseFloat(appSettings.getNumber("locationX").toFixed(3));
        // << app-settings-number-code

        // >> app-settings-default-value-code
        // will return "No string value" if there is no value for "noSuchKey"
        this.someKey = appSettings.getString("noSuchKey", "No string value");
        // << app-settings-default-value-code

        // >> app-settings-no-value-code
        // will return undefined if there is no value for "noSuchKey"
        let defaultValue = appSettings.getString("noSuchKey");
        console.log(defaultValue);
        // << app-settings-no-value-code

        // >> app-settings-no-key-code
        // will return false if there is no value for "noBoolKey"
        this.noBoolKey = appSettings.hasKey("noBoolKey");
        // << app-settings-no-key-code
    }

 /**
  * @method remove
  * @param {string} key Storage key name
  * @return {void}
  * @description
  * This method will remove a localStorage item from the client.
  **/
 remove(key: string): any {
   if (AppSettings.hasKey(key)) {
     AppSettings.remove(key);
   } else {
     console.log('Trying to remove unexisting key: ', key);
   }
 }

 public launchExample() {
     if (hasKey("gotoexample")) {
         let value = getString("gotoexample");
         remove("gotoexample");
         this.router.navigate([value]);
     }
 }

export var testFlush = function () {
    appSettings.setString(stringKey, "String value");
    // >> application-settings-flush
    var flushed = appSettings.flush();
    // will return boolean indicating whether flush to disk was successful
    // << application-settings-flush
    TKUnit.assert(flushed, "Flush failed: " + flushed);
    TKUnit.assert(appSettings.hasKey(stringKey), "There is no key: " + stringKey);
};

    public onSetSettings() {
        appSettings.setBoolean("isTurnedOn", true);
        this.isTurnedOn = appSettings.getBoolean("isTurnedOn");

        appSettings.setString("username", "Wolfgang");
        this.username = appSettings.getString("username");

        appSettings.setNumber("locationX", 54.321);
        this.locationX = parseFloat(appSettings.getNumber("locationX").toFixed(2));

        appSettings.setString("noSuchKey", "New Value!");
        this.someKey = appSettings.getString("noSuchKey", "No string value");

        appSettings.setBoolean("noBoolKey", true);
        this.noBoolKey = appSettings.hasKey("noBoolKey");
    }