Re: Want to construct a function instead of the code for onkeyup

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Message-ID	<37748651.8yA5jalnsy@PointedEars.de> (permalink)
From	Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To	Thomas 'PointedEars' Lahn <usenet@PointedEars.de>
Organization	PointedEars Software (PES)
Date	Wed, 16 Jan 2013 23:29:51 +0100
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Subject	Re: Want to construct a function instead of the code for onkeyup
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Tony Johansson wrote:

> How should I write a function if I want to move the code
> that is executed for onkeyup ?
> 
> <input type="text"  name="depthBow" id="txtDepthBow" size="20"
>    onkeyup="if (/[^0-9\.,]/g.test(this.value))
>    this.value = this.value.replace(/[^0-9\.,]/g,'')" />

You should pass the “this” value, here a DOM object reference, as argument 
to the function:

<https://developer.mozilla.org/en-
US/docs/JavaScript/Reference/Functions_and_function_scope>

<http://jibbering.com/faq/>
<http://PointedEars.de/faq>

And do not use the RegExp flag “g(lobal)” with RegExp.prototype.test(), as 
it is a wrapper around RegExp.prototype.exec() [ES 5.1, § 15.10.6.3]:

  var rx = /x/g;

  /* true */
  rx.test("x")

  /* false */
  rx.test("x")

  /* true */
  rx.test("x")

That another /RegularExpressionLiteral/ creates a new RegExp object is a 
change from ECMAScript Ed. 3 to 5 [Annex E]; do not rely on it unless you 
know what you are doing.

-- 
PointedEars

Twitter: @PointedEars2
Please do not Cc: me. / Bitte keine Kopien per E-Mail.

Thread

Want to construct a function instead of the code for onkeyup "Tony Johansson" <johansson.andersson@telia.com> - 2013-01-16 22:51 +0100
  Re: Want to construct a function instead of the code for onkeyup Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-01-16 23:29 +0100
    Re: Want to construct a function instead of the code for onkeyup "Tony" <tony.johansson@inport.com> - 2013-01-17 09:10 +0100
      Re: Want to construct a function instead of the code for onkeyup "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2013-01-17 15:40 +0100
    Re: Want to construct a function instead of the code for onkeyup "Tony" <tony.johansson@inport.com> - 2013-01-17 09:23 +0100

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