Check if a JavaScript string is a URL
function isValidURL(string) {
var res = string.match(/(http(s)?:\/\/.)?(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)/g);
return (res !== null)
};
var testCase1 = "http://en.wikipedia.org/wiki/Procter_&_Gamble";
alert(isValidURL(testCase1));check if url contains string
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
if (window.location.href.indexOf("franky") > -1) {
alert("your url contains the name franky");
}
});
</script>javascript url check
const isAbsoluteUrl = url => /^[a-z][a-z0-9+.-]*:/.test(url);
// Example
isAbsoluteUrl('https://1loc.dev'); // true
isAbsoluteUrl('https://1loc.dev/foo/bar'); // true
isAbsoluteUrl('1loc.dev'); // false
isAbsoluteUrl('//1loc.dev');Copyright © 2021 Codeinu
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