input box to keep two decimal places

HTML

< Div class = "COL-md-4" > 
    < div class = "form-has-Feedback Group Row" > 
        < div class = "COL-md-6 orderMsgRight" > 
            < label > is expected of our investment amount (million ): </ label > 
        </ div > 
        < div class = "COL-MD-orderMsgLeft. 6" > 
            < INPUT name = "investBudget" AutoComplete = "OFF" class = "NUM" placeholder = "Please two decimal places." onkeyup="clearNoNum(this)"
             type="text" id="investbudget" th：value="${estimated_cost}">
        </div>
    </div>
</div>

 

js

1  // the control input only two decimal 
2  function clearNoNum (obj) {
 . 3      obj.value obj.value.replace = (/ [. ^ \ D] / G, ""); // clear the "number" and . "" other than characters    
. 4      obj.value obj.value.replace = (/ \ {2,} / G,. "."); // keep only the first remove excess.    
. 5      obj.value = obj. . value.replace ( ".", "$ # $") Replace (/\./ G, "") .replace ( "$ # $", "." );
 . 6      obj.value = obj.value.replace (/^(\-)*(\d+)\.(\d\d).*$/, '$ 2. $ $. 3. 1'); // enter only two decimal places    
. 7      IF (obj.value.indexOf ( ".") <0 && obj.value ! = "") { // above has been filtered, the control here that if no decimal point, the first 01, 02 can not be similar to the amount   
. 8          obj.value =parseFloat (obj.value);
 . 9      }
 10  }
 . 11 // then check again loses focus 
 12 is $ ( "NUM.") Blur (. function () {
 13 is      var VL = the this .Value;
 14      var REG = new new the RegExp ( "^ [0-9] + ([0-9] {2}) $.?" );
 15      var Boo = reg.test (VL);
 16      IF (Boo) {
 . 17          the this .Value = Number The ( the this .Value) .toFixed (2 );
 18 is      } the else {
 . 19          $ ( the this ) .val ( "" );
20     }
21 
22 });