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- var ele = document.getElementById('phone');
- var curr = "";
- var regexPatt = /^(0|[1-9][0-9]*)$/;
- ele.addEventListener('keyup',function(e){
- var code = e.keyCode || e.which;
- if(this.value.match(regexPatt) || this.value.indexOf('+') > -1 || code == 8){
- curr = this.value;
- this.value = curr;
- } else {
- this.value = curr;
- }
- });
- <input type="text" onkeypress='return isNumberKey(event);'>
- function isNumberKey(evt) {
- var charCode = (evt.which) ? evt.which : event.keyCode;
- console.log(charCode);
- if (charCode != 43 && charCode > 31
- && (charCode < 48 || charCode > 57))
- return false;
- return true;
- }
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