IEM JavaScript Utilities

A collection of JavaScript utilities for weather data applications from the Iowa Environmental Mesonet.

Installation

``bash
npm install iemjs
`

Usage

$3

`javascript
// Import specific utilities
import { escapeHTML, requireSelectElement } from 'iemjs/domUtils';

// Or import everything
import * as IEM from 'iemjs';
`

$3

`javascript
// Import from web-accessible location
import { escapeHTML, requireSelectElement } from '/js/iemjs/domUtils.js';
`

Modules

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Utilities for safe DOM manipulation:

- escapeHTML(text) - Escape HTML to prevent XSS
- getElementById(id, ElementType) - Safe element retrieval with type checking
- requireSelectElement(id) - Get select element or throw error
- requireInputElement(id) - Get input element or throw error
- setSelectValue(selectElement, value) - Set select value with validation
- clearSelect(selectElement, placeholder) - Clear and reset select options
- addSelectOption(selectElement, value, text, selected) - Add option to select
- createElementWithText(tag, text, className) - Create element with text content
- showElement(element) / hideElement(element) - Show/hide elements
- removeAllChildren(element) - Remove all child nodes

$3

Weather and climate data constants:

- iemdata.states - US states list
- iemdata.vtec_phenomena - Weather event phenomena
- iemdata.vtec_significance` - Weather event significance levels

License

MIT