Revisions to How can I convert a string to an integer in JavaScript?

Active reading [<https://en.wikipedia.org/wiki/JavaScript>]. Expanded. Removed meta information (this belongs in comments). Removed historical information (that is what the revision history is for)—the answer should be as if it was written right now.

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edited Nov 9, 2022 at 1:21

Peter Mortensen

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Though an old question, but maybe this can be helpful to someone.

I use this way of converting string to ~~int~~ number:

var str = "25"; // stringString var number = str*1; // numberNumber

So, when multiplying by 1, the value does not change, but jsJavaScript automatically returns a number.

But as it is shown below, this should be used if you are sure that the str is a number (or can be represented as a number), otherwise it will return NaN NaN - not a number.

youYou can create simple function to use, e.g.,

function toNumber(str) {   return str*1; }

enter image description here

Though an old question, but maybe this can be helpful to someone.

I use this way of converting string to ~~int~~ number

var str = "25"; // string var number = str*1; // number

So, when multiplying by 1, the value does not change, but js automatically returns a number.

But as it is shown below, this should be used if you are sure that the str is a number(or can be represented as a number), otherwise it will return NaN - not a number.

you can create simple function to use, e.g.

function toNumber(str) { return str*1; }

enter image description here

I use this way of converting string to number:

var str = "25"; // String var number = str*1; // Number

So, when multiplying by 1, the value does not change, but JavaScript automatically returns a number.

But as it is shown below, this should be used if you are sure that the str is a number (or can be represented as a number), otherwise it will return NaN - not a number.

You can create simple function to use, e.g.,

function toNumber(str) {   return str*1; }

Enter image description here

added 34 characters in body

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edited Sep 2, 2015 at 9:28

dav

9.3k
16
81
144

Though andan old question, but maybe this can be helpful to someone.

I use this way of converting string to ~~int~~ number

var str = "25"; // string var number = str*1; // number

So, when multiplying by 1, the value does not change, but js automatically returns a number.

But as it is shown below, this should be used if you are sure that the str is a number(or can be represented as a number), otherwise it will return NaN - not a number.

you can create simple function to use, e.g.

function toNumber(str) { return str*1; }

enter image description here

Though and old question, but maybe this can be helpful to someone.

I use this way of converting string to ~~int~~ number

var str = "25"; // string var number = str*1; // number

So, when multiplying by 1, the value does not change, but js automatically returns a number.

But as it is shown below, this should be used if you are sure that the str is a number, otherwise it will return NaN - not a number.

you can create simple function to use, e.g.

function toNumber(str) { return str*1; }

enter image description here

Though an old question, but maybe this can be helpful to someone.

I use this way of converting string to ~~int~~ number

var str = "25"; // string var number = str*1; // number

So, when multiplying by 1, the value does not change, but js automatically returns a number.

But as it is shown below, this should be used if you are sure that the str is a number(or can be represented as a number), otherwise it will return NaN - not a number.

you can create simple function to use, e.g.

function toNumber(str) { return str*1; }

enter image description here

added 37 characters in body

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edited Sep 9, 2014 at 11:45

dav

9.3k
16
81
144

Though and old question, but maybe this can be helpful to someone I.

I use this way of converting string to int~~int~~ number

var str = "25"; // string var number = str*1; // intnumber

So, when multiplying by 1, the value does not change, but js automatically returns a number.

But as it is shown below, this should be used if you are sure that the str is a number, otherwise it will return NaN - not a number.

you can create simple function to use, e.g.

function toInttoNumber(str) { return str*1; }

enter image description here

Though old question, but maybe this can be helpful to someone I use this way of converting string to int

var str = "25"; // string var number = str*1; // int

So, when multiplying by 1, the value does not change, but js automatically returns a number.

But as it is shown below, this should be used if you are sure that the str is a number, otherwise it will return NaN - not a number.

you can create simple function to use, e.g.

function toInt(str) { return str*1; }

enter image description here

Though and old question, but maybe this can be helpful to someone.

I use this way of converting string to ~~int~~ number

var str = "25"; // string var number = str*1; // number

So, when multiplying by 1, the value does not change, but js automatically returns a number.

But as it is shown below, this should be used if you are sure that the str is a number, otherwise it will return NaN - not a number.

you can create simple function to use, e.g.

function toNumber(str) { return str*1; }

enter image description here

deleted 3 characters in body

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edited Mar 30, 2014 at 15:32

dav

9.3k
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144

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edited Mar 17, 2014 at 5:20

dav

9.3k
16
81
144

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answered Mar 16, 2014 at 18:24

dav

9.3k
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81
144

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