@cisstech/nge
Version:
NG Essentials is a collection of libraries for Angular developers.
37 lines • 4.47 kB
JavaScript
export function isNullOrEmpty(text) {
return text == null || text.trim() === '';
}
export function anyNullOrEmpty(...args) {
if (args == null) {
return true;
}
for (const e of args) {
if (isNullOrEmpty(e)) {
return true;
}
}
return false;
}
export const urlPattern = '^(https?:\\/\\/)?' + // protocol
'((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|' + // domain name
'((\\d{1,3}\\.){3}\\d{1,3}))' + // OR ip (v4) address
'(\\:\\d+)?(\\/[@-a-z\\d%_.~+]*)*' + // port and path
'(\\?[;@&a-z\\d%_.~+=-]*)?' + // query string
'(\\#[@-a-z\\d_]*)?$';
export function isURL(str) {
// https://stackoverflow.com/questions/5717093/check-if-a-javascript-string-is-a-url
const pattern = new RegExp(urlPattern, 'i'); // fragment locator
return !!pattern.test(str);
}
export function hashCode(str) {
let hash = 0;
if (str.length === 0)
return hash;
for (let i = 0; i < str.length; i++) {
const char = str.charCodeAt(i);
hash = (hash << 5) - hash + char;
hash = hash & hash; // Convert to 32bit integer
}
return hash;
}
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