Home > Javascript > To check atleast one character in Textbox

To check atleast one character in Textbox


Hi

try this Javascript function

One validation is to check atleast one character in the textbox. The function written below is to validate atleast one character in textbox.

function FNCheck() {
        var txt = document.getElementById(’<%= TextBox1.ClientID %>’).value;
            var valid = /.*[a-zA-Z].*/;
            if (valid.test(txt))   {
                alert(’OK’);
            }
            else     {
                alert(’Please Enter Valid Entry’);
            }
    }

Good Luck

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Categories: Javascript
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