JS Numeric input Control

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Integer: <input type= "text"  name= "AAA"  onkeypress= "return event.keycode>=48 & & event.keycode<=57 | |  event.keycode==45 "     onblur=" isnum (this, ' numeric format is incorrect! ', 0) '  /><br/> Positive integers: <input type= "text"  name= "BBB"  onkeypress= "return event.keycode>=48 & & event.keycode<=57 " /><br/> real numbers: <input type=" text " name=" CCC "  onkeypress= "return event.keycode>=48 && event.keycode<=57 | |  event.keycode==46| |  event.keycode==45 "     onblur=" isnum (this, ' numeric format is incorrect! ', 0) '  /><br/> Positive real numbers: <input type= "text"  name= "ddd"  onkeypress= "return event.keycode>=48 & & event.keycode<=57 | |  event.keycode==46 "     onblur=" isnum (this, ' numeric format is incorrect! ', 0) '/><script  Type= "Text/javascript" >/*    &nbSP; Determines whether an object is numeric.      obj: Text box,      info: Error message,      DefaultValue: The default value given after the error   */function isnum (obj,info,defaultvalue) {    if ( defaultvalue==undefined)      {          Defaultvalue=0;     }        if (IsNaN ( Obj.value))     {//non-numeric          alert (info);          obj.value=defaultValue;          obj.focus ();     }    if (obj.value== "")      {        obj.value=defaultValue;         obj.focus ();    }}</script>

650) this.width=650; "src="/img/fz.gif "alt=" Copy Code "style=" border:0px; "/>

JS Numeric input Control