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added 2 characters in body; deleted 94 characters in body

edited Dec 14, 2010 at 21:51

Use a regular expression to check for digits only

var str = '192834a0'; alert( /^\d$/.test(str) );

accomplish this can be converted to a function.

function onlyNumbersisAlphanumeric( str ) { return /^\d$^[0-9a-zA-Z]+$/.test(str); }

Use a regular expression to check for digits only

var str = '192834a0'; alert( /^\d$/.test(str) );

this can be converted to a function

function onlyNumbers( str ) { return /^\d$/.test(str); }

Use a regular expression to accomplish this.

function isAlphanumeric( str ) { return /^[0-9a-zA-Z]+$/.test(str); }

answered Dec 14, 2010 at 21:41

Use a regular expression to check for digits only

var str = '192834a0'; alert( /^\d$/.test(str) );

this can be converted to a function

function onlyNumbers( str ) { return /^\d$/.test(str); }