input determines if the input value is legal

1, to determine the legality of input value entered there are many ways that I used here is the judge in the onchange, code is as follows: [All major browsers support]

<input type="text" name="input_grjcjs"'+
                ' onchange="setValueChange(this,&quot;'+grzh+'&quot;,'+r.ROW_ID+','+r.GRZHZT+','+r.GRYJCE+','+r.DWYJCE+
                ','+r.YJCEHJ+','+tw+')" grjcbl="'+r.GRJCBL+'" dwjcbl="'+r.DWJCBL+'" value="'+data+'" '+ dis+
                ' class="form-control">

2, js Code:

function setValueChange (e, grzh, rowid , grzhzt, gryjce, dwyjce, yjcehj, this_who) { 
　　value after the change // 
    var this_val = e.value || 0; 
　　before changing the value of // 
    var old_val = e.defaultValue; 
　　/ / 
    var REG = / ^ [0-9] + [0-9] * $ /;.? // determines whether the string is digital 
     IF (! reg.test (this_val)) { 
　　　　　　// If the user input is not a character put the string value to the original value changes 
         e.Value = old_val; 
         return to false; 
     } 
}

3, may also be used oninput = "value = value.replace (/ [^ \ d] / g, '')" to verify input does not support the following IE9 Firefox 4.0 does not support what is used as follows:

 <input type="text" name="tel" oninput = "value=value.replace(/[^\d]/g,'')" maxlength="11"/>