[LeetCode][JavaScript]Valid Number

Valid Number 

Validate if a given string is numeric.

Some examples:
"0" => true
" 0.1 " => true
"abc" => false
"1 a" => false
"2e10" => true

Note: It is intended for the problem statement to be ambiguous. You should gather all requirements up front before implementing one.

 https://leetcode.com/problems/valid-number/

 

 

---

 

 

正则技术哪家强

/**
 * @param {string} s
 * @return {boolean}
 */
var isNumber = function(s) {
    s = s.trim();
    if(s !== "" && /^[-+]?(\d+\.?|\.\d+)\d*([e|E][-+]?\d+)?$/.test(s)){
        return true;
    }
    return false;
};