function Test(String s){
var len = s.length;
for ( var i=0; i<len; i++ ){
if ( this.charCodeAt(i) <0 || this.charCodeAt(i) >255 ){
return false;
}
}
return true;
}
var len = s.length;
for ( var i=0; i<len; i++ ){
if ( this.charCodeAt(i) <0 || this.charCodeAt(i) >255 ){
return false;
}
}
return true;
}
<input onChange="value=value.replace[\W]/g,'')" >
{
//如果值为空,通过校验
if (str == "")
return true;
var pattern = /^([\\u4E00-\\u9FA5]|[\\uFE30-\\uFFA0])*$/gi;
if (pattern.test(str))
return true;
else
return false;
}
<input style="ime-mode: disabled" ondragenter="return false"
onpaste="return !clipboardData.getData('text').match(/[^\x00-\xff]/)">