# ArkUI (JavaScript) Development



## How do I convert the fields in an XML file into JavaScript objects?

Applicable to: OpenHarmony SDK 3.2.3.5, stage model of API version 9

To convert fields in an XML file into JavaScript objects, call the **convert** API in the **convertxml** module.

Example:


```
import convertxml from '@ohos.convertxml';
// Code snippet
xml =
  '<?xml version="1.0" encoding="utf-8"?>' +
  '<note importance="high" logged="true">' +
  '    <title>Happy</title>' +
  '    <todo>Work</todo>' +
  '    <todo>Play</todo>' +
  '</note>';
let conv = new convertxml.ConvertXML(); 
// Options for conversion. For details, see the reference document.
let options = {trim : false, declarationKey:"_declaration",
  instructionKey : "_instruction", attributesKey : "_attributes",
  textKey : "_text", cdataKey:"_cdata", doctypeKey : "_doctype",
  commentKey : "_comment", parentKey : "_parent", typeKey : "_type",
  nameKey : "_name", elementsKey : "_elements"}
let result:any = conv.convert(xml, options) // Convert fields in the XML file into JavaScript objects.
console.log('Test: ' + JSON.stringify(result))
console.log('Test: ' + result._declaration._attributes.version) // version field in XML file
console.log('Test: ' + result._elements[0]._elements[0]._elements[0]._text) // title field in XML file
```

Reference: [XML-to-JavaScript Conversion](https://gitee.com/openharmony/docs/blob/master/en/application-dev/reference/apis/js-apis-convertxml.md)

## What are the differences between JavaScript, TypeScript, and eTS?

Applicable to: OpenHarmony SDK 3.2.3.5, stage model of API version 9

- JavaScript: a lightweight, weakly-typed programming language, most commonly known as the scripting language for web pages.

- TypeScript: a superset of JavaScript, with additions of static typing and more object-oriented APIs, enums, etc.

- eTS: a superset of TypeScript and the programming language for OpenHarmony ArkUI development, which powers UI development through a declarative development paradigm.

## How do I convert the time to the HHMMSS format?

Example:


```
export default class DateTimeUtil{
  /**
  * HHMMSS
  */
  getTime() {
    const DATETIME = new Date()
    return this.concatTime(DATETIME.getHours(),DATETIME.getMinutes(),DATETIME.getSeconds())
  }
  /**
  * YYYYMMDD
  */
  getDate() {
    const DATETIME = new Date()
    return this.concatDate(DATETIME.getFullYear(),DATETIME.getMonth()+1,DATETIME.getDate())
  }
  /**
  * If the date is less than 10, add a leading zero, for example, **07**.
  * @param value Indicates the value.
  */
  fill(value:number) {
    return (value> 9 ? '' : '0') + value
  }
  /**
  * Concatenate year, month, and date fields.
  * @param year
  * @param month
  * @param date
  */
  concatDate(year: number, month: number, date: number){
    return `${year}${this.fill(month)}${this.fill(date)}`
  }
  /**
  Concatenate hours, minutes, and seconds fields.
  * @param hours
  * @param minutes
  * @param seconds
  */
  concatTime(hours:number,minutes:number,seconds:number){
    return `${this.fill(hours)}${this.fill(minutes)}${this.fill(seconds)}`
  }
}
```