I would like to get whatever characters not matching the regex. E.g. "abc123" would return "123", [1,2,3] or something similar.
Is there any built in way to achieve this?
$('input').on('keyup', function(){
var valid = /^[a-zA-Z\s*]*$/.test(this.value);
console.log(valid);
});
Another solution in case someone is intrested:
var x = this.value.split('').filter(function(v){
return !/[a-zA-Z\s*]+/.test(v);
});
Using reduce
var result = "abc123def123".split(/[a-zA-Z\s*]+/).reduce(function(prev, curr) {
return curr ? (prev.push(curr), prev) : prev;
}, []);
If you want the result as a string
var result = "abc123def123".split(/[a-zA-Z\s*]+/).reduce(function(prev, curr) {
return curr ? prev + curr : prev;
}, "");
reduce variant as well :) Please check
reduce :) Is there a way to make it either return a string or an array with each "invalid" character as an element? I know I can just to a result[0], but jsut curious. Oh and another tip: use [] rather than new Array() imo.stringvar result = "abc123def123".split(/[a-zA-Z\s*]+/).filter(function(data) { return data ? data : false; }, ""); :)/[^abc]+/.exec('abc123')
Returns the characters when they do not match either a, b or c.
how does this work with returning not accepted characters separated by comma? reduce will not work in below example example:
const allowedSplChars = /^([a-zA-Z0-9@\-._]{3,50})$/;
let allowedCharacters = allowedSplChars.test(uidInput.value);
var disallowedCharacters = [];
disallowedCharacters = uidInput.value.match(allowedSplChars);
if (allowedCharacters) {
let splCharErrorNode = document.getElementById("uid_splCharacters");
if (splCharErrorNode) {
uidValidationcontainer.removeChild(splCharErrorNode);
}
} else {
//remove duplicates
disallowedCharacters = disallowedCharacters.filter((element, index) => {
return disallowedCharacters.indexOf(element) === index;
});
let splCharErrorNode = document.getElementById("uid_splCharacters");
if (splCharErrorNode) {
splCharErrorNode.innerHTML = `${disallowedCharacters.join(", ")}`;
}
}
