按字符数控制：
复制代码代码如下:
<nama area teks="gbKonten"
onkeyup="if(ini.nilai.panjang>2000) ini.nilai=ini.nilai.substr(0,2000)"
onkeydown="if(ini.nilai.panjang>2000) ini.nilai=ini.nilai.substr(0,2000)"
onblur="if(ini.nilai.panjang>2000) ini.nilai=ini.nilai.substr(0,2000)"
onpropertychange= "if(this.value.length>2000) this.value=this.value.substr(0,2000)"></textarea>
按字节数控制：
复制代码代码如下:
<textarea cols="50" id="deskripsi" name="userModel.description" row="5"
onkeydown="key1=this.value;value1 = key1.replace(/[/u4e00-/u9fa5]/g,' ');if(value1.length>500) this.value=this.value.substr(0,500) "
onkeyup="key1=this.value;value1 = key1.replace(/[/u4e00-/u9fa5]/g,' ');if(value1.length>500) this.value=this.value.substr(0,500) "
onblur="key1=this.value;value1 = key1.replace(/[/u4e00-/u9fa5]/g,' ');if(value1.length>500) this.value=this.value.substr(0,500) "
onchange="key1=this.value;value1 = key1.replace(/[/u4e00-/u9fa5]/g,' ');if(value1.length>500) this.value=this.value.substr(0,500) "></teksarea>