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mjuhl/escapeHtml.js

Last active July 28, 2021 04:50
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Escape HTML entities
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escapeHtml.js
const htmlEntities = {
'<': '&lt;',
'>': '&gt;',
'"': '&quot;',
"'": "&#39;",
'&': "&amp;"
};
const htmlCharExpr = new RegExp(`[${Object.keys(htmlEntities).join('')}]`, 'g');
function escapeHtml (string) {
return string.replace(htmlCharExpr, char => htmlEntities[char]);
}
function escapeHtmlTest () {
const string = `&><'"“‘”’test`;
const escaped = escapeHtml(string);
console.log("Escaped: %s", escaped);
console.assert(escaped === `&amp;&gt;&lt;&#39;&quot;“‘”’test`, "Expected &amp;&gt;&lt;&#39;&quot“‘”’test, got %s", escaped);
}
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