3 examples of 'allow only alphanumeric in textbox using javascript' in JavaScript
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21 function allowalphanumeric(e) { 22 var key = window.event ? e.keyCode : e.which; 23 var keychar = String.fromCharCode(key); 24 var reg = new RegExp("[a-zA-Z0-9]"); 25 var carok = reg.test(keychar); 26 return carok; 27 }
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4 static invalidAlphaNumeric(control: Control):{ [key:string]:boolean } { 5 if ( control.value && control.value.length && !control.value.match(/^[a-z0-9]+$/i) ){ 6 return {invalidAlphaNumeric: true }; 7 } 8 return null; 9 }
121 function checkAllowedCharacters(query) 122 { 123 matches = query.match(/[^a-zA-Z0-9_+\-:.()\"*?&|!{}\[\]\^~\\@#\/$%'= ]/); 124 if(matches != null && matches.length > 0) 125 { 126 if(alertUser) alert("Invalid search query! The allowed characters are a-z A-Z 0-9. _ + - : () \" & * ? | ! {} [ ] ^ ~ \\ @ = # % $ ' /. Please try again.") 127 return false; 128 } 129 return true; 130 }