how to make this javascript to able to enter dot in textbox

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Hello to all,

i have a one problem regarding to the javascript. i use the function which make textbox enter only numbers with decimal point but i can`t get. so please help me to get out of this ..

i use :

var temp=document.getElementById("<%=txt_rate.ClientID%>").value;
 var len=temp.length;
 for(var i=0;i<temp.length;i++)
 {
        var temp1=temp.charAt(i);
        if(isNaN(temp1))
        {
            alert("Please Enter Rate");
            document.getElementById("<%=txt_rate.ClientID%>").focus();
            return false;
         }
 }

i want to make to allow the user to enter the value with numbers as well as dot. so please help me....

Posted 14-Sep-12 1:35am

Mits Machhi

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Comments

[no name] 14-Sep-12 7:42am

Okay do change your if statement to allow a dot. What is the problem?

[no name] 14-Sep-12 7:45am

how can i ?

[no name] 14-Sep-12 7:50am

What on earth do you mean "how can i"? Open your file in whatever editor that you are using and you type in the code to change your if statement to allow a dot as well as a number. It's called "programming".

[no name] 14-Sep-12 7:54am

dear i understand all the possibilities to done this. and i am not get the sucess then and only then i post it. if you do not want to give the answer in straight way, so nothing to worry.. bcz this site is develop for the help purpose in Programming. so whatever you want to do ?

[no name] 14-Sep-12 7:57am

No obviously you do not know. And I gave you the answer if you are not programmer enough to know the difference between checking a character for being a number and character being a dot then perhaps you are in the wrong line of work.

[no name] 14-Sep-12 7:58am

dear i am in perfact line and i done myself to get the solution. so no need to help from your side and thank you so much for comment on my question.

[no name] 14-Sep-12 8:26am

Oh you are, are you? Is that why you are on here constantly asking very basic questions and trying to get other people to write your code for you?

[no name] 14-Sep-12 8:27am

nothing worry about it.......don`t worryyyy

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Mr. Mahesh Patel · Answer 1 · 2012-09-14T01:44:00

hi dear,

try below function.

Please remember that you have to call this function on keypress event of text box

JavaScript

function ValidDecimalPrice(textBox, evt) {
    // Call This Function On KeyPress Event Of TextBox
    var txtPrice = document.getElementById(textBox);
    var valPrice = txtPrice.value;
    if (navigator.appName.toLowerCase() == "microsoft internet explorer") {
        evt = evt || window.event;
        var charCode = evt.keyCode;
        //alert(charCode);
        if (charCode > 31 && (charCode < 48 || charCode > 57) && (charCode != 46)) {
            event.ValidDecimalPrice ? event.ValidDecimalPrice() : event.returnValue = false;
        }
        if (charCode == 46 && valPrice.indexOf('.') > -1) {
            event.ValidDecimalPrice ? event.ValidDecimalPrice() : event.returnValue = false;
        }
        if (charCode == 46 && valPrice == "") {
            txtPrice.value = "0.";
            event.ValidDecimalPrice ? event.ValidDecimalPrice() : event.returnValue = false;
        }
    }
    else {
        var charCode = (evt.which) ? evt.which : evt.keyCode;
        if (charCode > 31 && (charCode < 48 || charCode > 57) && (charCode != 46)) {
            return false;
        }
        if (charCode == 46 && valPrice.indexOf('.') > -1) {
            return false;
        }
        if (charCode == 46 && valPrice == "") {
            txtPrice.value = "0.";
            return false;
        }
    }
    return true;
} //////////////////////////

Example for call it in C#

C#

myTextBox.Attributes.Add("OnKeyPress", "return ValidDecimalPrice('" + myTextBox.ClientID + "',event);");

enjoy it