nyagami
24 lines
823 B
TypeScript
24 lines
823 B
TypeScript
export const isUrlAbsolute = (url: string) => {
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if (url) {
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if (url.indexOf('//') === 0) {
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return true;
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} // URL is protocol-relative (= absolute)
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if (url.indexOf('://') === -1) {
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return false;
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} // URL has no protocol (= relative)
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if (url.indexOf('.') === -1) {
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return false;
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} // URL does not contain a dot, i.e. no TLD (= relative, possibly REST)
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if (url.indexOf('/') === -1) {
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return false;
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} // URL does not contain a single slash (= relative)
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if (url.indexOf(':') > url.indexOf('/')) {
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return false;
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} // The first colon comes after the first slash (= relative)
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if (url.indexOf('://') < url.indexOf('.')) {
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return true;
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} // Protocol is defined before first dot (= absolute)
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}
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return false; // Anything else must be relative
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};
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