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71 lines
2.4 KiB
JavaScript
71 lines
2.4 KiB
JavaScript
'use strict';
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export const $ = document.querySelector.bind(document);
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export const $$ = document.querySelectorAll.bind(document);
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export class Templater {
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/**
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* Mini templating engine based on data attributes. Selects elements based
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* on a data-tpl and data-tpl-key attribute and can set textContent
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* and innterHtml.
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* @param {string} templateId - Template section, e.g. value of data-tpl.
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*/
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constructor(templateId) {
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this.templateId = templateId;
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}
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/**
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* Get an element from the template and return it.
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* @param {string} key - Name of the key within the current template.
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*/
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get(key) {
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return $(`[data-tpl="${this.templateId}"][data-tpl-key="${key}"]`);
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}
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/**
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* Fill the content of a template element with a value.
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* @param {string} key - Name of the key within the current template.
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* @param {string} value - Content to insert into template element.
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* @param {boolean} html - Insert content as HTML. Defaults to false.
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*/
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fill(key, value, html = false) {
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const el = this.get(key);
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if (html) el.innerHTML = value || '';
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else el.textContent = value || '';
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return el;
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}
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}
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/**
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* Handle API response and assign status to returned JSON.
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* @param {Response} res – The response.
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*/
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export const handleResponse = res => {
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if (res.ok) return res.json()
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.then(json => Object.assign({}, json, { ok: res.ok }))
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else return ({ ok: res.ok })
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};
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/**
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* Convert a number to a string and add thousand separator.
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* @param {number|string} num - The number to convert.
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* @param {string} separator – Thousand separator.
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*/
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export const convertNumber = (num = 0, separator = ',') =>
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num.toString().replace(/\B(?=(\d{3})+(?!\d))/g, separator);
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/**
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* Abbreviate a number, e.g. 14249930 --> 14.25m.
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* @param {number|string} num - The number to convert.
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* @param {number} fixed - Number of decimals.
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*/
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export const abbrNumber = (num = 0, fixed = 1) => {
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const suffixes = ['', 'k', 'm', 'b', 't'];
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if (num === null || num === 0) return 0;
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const b = num.toPrecision(2).split('e');
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const k = (b.length === 1) ? 0 : Math.floor(Math.min(b[1].slice(1), 14) / 3);
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const n = (k < 1) ? num : num / Math.pow(10, k * 3);
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const c = (k >= 1 && n >= 100 ) ? Math.round(n) : n.toFixed(fixed);
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return (c < 0 ? c : Math.abs(c)) + suffixes[k];
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}
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