textarea controls the number of input character bytes (sample code)_javascript skills

WBOY

Release： 2016-05-16 17:06:43

Original

1269 people have browsed it

Control by number of characters:

Copy code The code is as follows:

 onkeyup="if(this.value.length>2000) this.value=this. value.substr(0,2000)"<br> onkeydown="if(this.value.length>2000) this.value=this.value.substr(0,2000)"<br> onblur="if(this. value.length>2000) this.value=this.value.substr(0,2000)"<br> onpropertychange= "if(this.value.length>2000) this.value=this.value.substr(0,2000 )">

Control by number of bytes:

Copy code The code is as follows:

 onkeydown="key1=this.value;value1 = key1.replace(/[u4e00-u9fa5]/g,' ');if(value1.length>500) this.value=this.value.substr(0,500) " <br> onkeyup="key1=this.value;value1 = key1.replace(/[u4e00-u9fa5]/g,' ');if(value1.length>500) this.value=this.value.substr( 0,500)"<br> onblur="key1=this.value;value1 = key1.replace(/[u4e00-u9fa5]/g,' ');if(value1.length>500) this.value=this.value. substr(0,500)" <br> onchange="key1=this.value;value1 = key1.replace(/[u4e00-u9fa5]/g,' ');if(value1.length>500) this.value=this. value.substr(0,500)">

Related labels：

textarea Number of characters

source：php.cn

Previous article：js sample code for processing repeated elements in array_javascript skills Next article：Detailed example of js merging the same content of table's td_javascript skills

Statement of this Website

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn