10 examples of 'jquery validate only numbers' in JavaScript

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validate(element) {
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	let val = null;
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	let {min, max, nan, float} = this.settings;
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	if (float) {
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		val = parseFloat(element.value);
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	} else {
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		if (element.value.indexOf('.') != -1) {
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			return false;
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		} else {
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			val = parseInt(element.value, 10);
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		}
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	}
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	if (isNaN(val) && !nan) {
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		return false;
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	} else if (isNaN(val) && nan) {
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		return true;
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	}
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	return (min == null || val >= min) && (max == null || val <= max);
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}

135
function validateNum(value){
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    if(/^\d{4,11}$/.test(value)){
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        return true;
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    }else{
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        return false;
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    }
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}

809
static validateNumber (val) {
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    return Number(val);
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}

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, Integer     : function _fnValidInteger(obj) {
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                  var elValue = $(obj).val();
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                  var isValid = ( (elValue.length===0) || (/^-?\d+$/.test(elValue)) );
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                  return isValid;
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                  //return spa['_validate']._showValidateMsg(obj, msg, isValid);
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                }

62
function isNumber(value) {
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    var patrn = /^(-)?\d+(\.\d+)?$/;
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    if (patrn.exec(value) == null || value == "") {
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        return false
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    } else {
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        return true
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    }
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}

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export function isValid(value: any): boolean {
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    const parsed = parseInt(value);
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    return isFinite(parsed) && value >= 0;
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}

60
function positiveIntegerValidator($elt) {
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    let value = $elt.val().trim().replace(/^0+(.+)/, '$1');
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    $elt.val(value);
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    if (!value) {
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        return;
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    }
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    if (/^[0-9]+$/.test(value)) {
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        // Check that we are in the positive range of a golang int64 max value, which is
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        // 9223372036854775807 minus a safety marge due to comparison rounding errors.
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        if (parseInt(value) > 9000000000000000000) {
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            return {msg: "Value out of bound."};
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        }
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    } else {
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        return {msg: "Value must be a positive integer."};
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    }
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}

135
function validate(value){
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	var hours, minutes;
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	if(value.length == 1)
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		value="0"+value+"00";
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	if(value.length == 2)
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		value=value+"00";
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	if(value.length == 3)
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		value="0"+value;
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	hours = value.substring(0,2);
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	minutes = value.substring(2,4);
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	if(hours<=23 && minutes<=59){
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		return value;
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	}else{
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		return false;
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	}
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}

13
public isNumber(value: any) {
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  return typeof value === 'number' && isFinite(value);
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}

8
function validateNumber(num) {
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  num = (num + '').replace(/\s+|-/g, '');
10
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  if (!/^\d+$/.test(num)) {
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    return false;
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  }
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  var card = cardFromNumber(num);
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  if (card) {
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    var cardNumbers = A(card.length);
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    return ( cardNumbers.includes(num.length)) && (card.luhn === false || luhnCheck(num));
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  }
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  return false;
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}