Regular expression Any number

Question

I need to test for   any number   in a string in javascript  how would i match it   Oh      and     also need to be matched    so string like   1   or   12345   is a match   Non match    23432  or  1     So for example       form  section  parent   find  input text   each function index           this  attr  name     this  attr  name   replace   current         index               I need to replace input fields name   items 0  firstname  to  items 1  firstname  thanks

User · Accepted Answer

UPDATE  for your updated question  variable match     0-9          Try this   variable match   0-9            for unsigned integers variable match   -0-9           for signed integers variable match   - 0-9          for signed float numbers   Hope this helps

User · Answer

if  123  search    d      gt   0         its a number

User · Answer

You can use the following function to find the biggest  number  in any string   It returns the value of the biggest  number  as an Integer   var biggestNumber   function str        var pattern        0-9      g  match  biggest   0       while   match   pattern exec str       null            if  match index     pattern lastIndex                pattern lastIndex                      match 1    parseInt match 1            if biggest  lt  match 1                 biggest   match 1                       return biggest        DEMO  The following demo calculates the biggest number in your textarea every time you click the button   It allows you to play around with the textarea and re-test the function with a different text    x000D   x000D  var biggestNumber   function str    x000D      var pattern        0-9      g  match  biggest   0  x000D   x000D      while   match   pattern exec str       null    x000D          if  match index     pattern lastIndex    x000D              pattern lastIndex    x000D            x000D          match 1    parseInt match 1    x000D          if biggest  lt  match 1     x000D              biggest   match 1   x000D            x000D        x000D      return biggest  x000D    x000D   x000D  document getElementById  myButton   addEventListener  click   function     x000D      alert biggestNumber document getElementById  myTextArea   value    x000D      x000D   lt div gt  x000D       lt textarea rows  6  cols  50  id  myTextArea  gt  x000D  this is a test  1  also this  2  is a test x000D  and again  18  this is a test   x000D  items 14  items 29  firstname too is a test  x000D  items 4  firstname too is a test  x000D       lt  textarea gt  x000D   lt  div gt  x000D   x000D   lt div gt  x000D      lt button id  myButton  gt Try me lt  button gt  x000D   lt  div gt  x000D   x000D   x000D    See also this Fiddle

User · Answer

var mask      d     if   myString exec mask           That s a number

[javascript] Regular expression [Any number]

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