layui-box layui-code-view" style="margin-top: 0px; margin-bottom: 10px; padding: 9.5px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); white-space: pre-wrap; overflow-wrap: break-word; box-sizing: border-box; position: relative; font-size: 13px; border: 1px solid rgb(204, 204, 204); background-color: rgb(245, 245, 245); color: rgb(51, 51, 51); font-family: Menlo, Monaco, Consolas, "Courier New", monospace; overflow: auto; line-height: 1.42857; word-break: break-all; border-radius: 4px;">
code
function returnFloat(value){
 var value=Math.round(parseFloat(value)*100)/100;
 var xsd=value.toString().split(".");
 if(xsd.length==1){
 value=value.toString()+".00";
 return value;
 }
 if(xsd.length>1){
 if(xsd[1].length<2){
 value=value.toString()+"0";
 }
 return value;
 }
}
var num=3.1;
console.log(returnFloat(num));