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update

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Ingy döt Net 2013-06-05 21:47:54 +00:00
parent 1f1ad49427
commit 6f050a029e
2496 changed files with 37609 additions and 3031 deletions
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7
Task/Determine-if-a-string-is-numeric/JavaScript/determine-if-a-string-is-numeric.js
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@ -1,6 +1,9 @@
function isNumeric(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
var value = "123.45e7"; // Assign string literal to value
if (isFinite(value)) {
if (isNumeric(value)) {
// value is a number
}
//Or, in web browser in address field:
// javascript:value="123.45e4"; if(isFinite(value)) {alert('numeric')} else {alert('non-numeric')}
// javascript:function isNumeric(n) {return !isNaN(parseFloat(n)) && isFinite(n);}; value="123.45e4"; if(isNumeric(value)) {alert('numeric')} else {alert('non-numeric')}