相关疑难解决方法(0)

在JavaScript中验证十进制数的最干净,最有效的方法是什么？

奖励积分:

1. 明晰.解决方案应该干净简单.
2. 跨平台.

测试用例:

01. IsNumeric('-1')      => true
02. IsNumeric('-1.5')    => true
03. IsNumeric('0')       => true
04. IsNumeric('0.42')    => true
05. IsNumeric('.42')     => true
06. IsNumeric('99,999')  => false
07. IsNumeric('0x89f')   => false
08. IsNumeric('#abcdef') => false
09. IsNumeric('1.2.3')   => false
10. IsNumeric('')        => false
11. IsNumeric('blah')    => false

$('#create_membership').click(function () {
    var zip = $('#zip').val();

    else if (zip == ''){
        errorMessage = "*Zipcode required!";
    }
    else if ((zip.length)< 5 || (zip.length)>5 ){
        errorMessage = "*zipcode should only be 5 digits";
    }
    else if ( zip =( "^[0-9]+$" )){
        errorMessage = "*zipcode should be numbers only";
    }

我得到第一个和第二个,即邮政编码的空和长度验证.但对于第三种情况,数字验证不起作用.任何人帮助我获得数字验证提前感谢