IsNumeric() similar function to js

 

This question already has an answer here:

  • Validate decimal numbers in JavaScript - IsNumeric() 48 answers

    • use isNaN() and pass a string or number to it. It will return true or false. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/isNaN

    Try 

    var input = 1;
console.log(typeof input === "number");

    See typeof 

    var input1 = 1, input2 = "1";
console.log(typeof input1 === "number", typeof input2 === "number");

    Per the question previously asked here: Is there any function like IsNumeric in javascript to validate numbers

    You can find an elegant function to create within your own library as follows: 

    function isNumeric(n) {
    return !isNaN(parseFloat(n)) && isFinite(n);
}
    链接地址: http://www.djcxy.com/p/26406.html

    上一篇: Javascript功能相当于PHP功能

    下一篇: IsNumeric（）与js类似的功能