55 lines
1.4 KiB
JavaScript
55 lines
1.4 KiB
JavaScript
const HTML_ENTITY_MAP = {
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"&": "&",
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"<": "<",
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">": ">",
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"\"": """,
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"'": "'"
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};
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const HTML_ENTITY_REGEX = /[&<>"']/g;
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class DOM {
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/**
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* Returns a child element by its ID. Parent defaults to the entire document.
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*/
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static id(id, parent) {
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return (parent || document).getElementById(id);
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}
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/**
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* Returns an array of all child elements containing the specified class. Parent defaults to the entire document.
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*/
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static cls(cls, parent) {
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return Array.prototype.slice.call((parent || document).getElementsByClassName(cls));
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}
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/**
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* Returns an array of all child elements that have the specified tag. Parent defaults to the entire document.
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*/
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static tag(tag, parent) {
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return Array.prototype.slice.call((parent || document).getElementsByTagName(tag));
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}
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/**
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* Returns the first child element containing the specified class. Parent defaults to the entire document.
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*/
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static fcls(cls, parent) {
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return (parent || document).getElementsByClassName(cls)[0];
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}
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/**
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* Converts characters to their HTML entity form.
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*/
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static escapeHTML(html) {
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return String(html).replace(HTML_ENTITY_REGEX, s => HTML_ENTITY_MAP[s]);
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}
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/**
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* Converts a timestamp into a human readable time, using the browser locale.
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*/
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static getHumanReadableTime(timestamp) {
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const date = new Date(timestamp);
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return date.toLocaleDateString() + ", " + date.toLocaleTimeString();
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};
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}
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