vanillajs-browser-helpers/attr.js

Collection of convenience code snippets (helpers) that aims to make it a little easier to work with vanilla JS in the browser

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * Get/set the value of an attribute on a given DOM element
 *
 * @param elm - The DOM element to fetch/set the attribute from
 * @param attrName - Name of the attribute to handle
 * @param value - Value to insert into the attribute
 * @return Data found in the attribute (the old value if {value} is defined)
 *
 * @example
 *
 * ```ts
 * // Get the value of an attribute
 * attr(document.documentElement, 'lang');
 *
 * // Set the value of an attribute
 * attr(document.documentElement, 'lang', 'da-DK');
 * ```
 */
function attr(elm, attrName, value) {
    var currVal = elm.getAttribute(attrName);
    if (value === false) {
        elm.removeAttribute(attrName);
    }
    else if (value !== undefined) {
        if (value === true) {
            value = '';
        }
        elm.setAttribute(attrName, String(value));
    }
    return currVal;
}
exports.default = attr;