eewing
27 lines
571 B
JavaScript
27 lines
571 B
JavaScript
const ATTR_REGEX = /[&"<]/g;
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const CONTENT_REGEX = /[&<]/g;
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/**
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* @template V
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* @param {V} value
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* @param {boolean} [is_attr]
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*/
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export function escape_html(value, is_attr) {
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const str = String(value ?? '');
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const pattern = is_attr ? ATTR_REGEX : CONTENT_REGEX;
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pattern.lastIndex = 0;
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let escaped = '';
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let last = 0;
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while (pattern.test(str)) {
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const i = pattern.lastIndex - 1;
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const ch = str[i];
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escaped += str.substring(last, i) + (ch === '&' ? '&' : ch === '"' ? '"' : '<');
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last = i + 1;
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}
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return escaped + str.substring(last);
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}
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