get only numbers regex javascript
var numberPattern = /\d+/g;
'something102asdfkj1948948'.match( numberPattern )
                                
                            get only numbers regex javascript
var numberPattern = /\d+/g;
'something102asdfkj1948948'.match( numberPattern )
                                
                            just number regex js
// https://regex101.com/r/qyq3PG/1
// or 
/^[0-9]*$/
                                
                            regex only digits
console.log(`12331: ${/^\d+$/.test('12331')}`) // true 
console.log(`abc: ${/^\d+$/.test('abc')}`) // false
                                
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