change the text box color with javascript in asp.net

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Can any one help me? How do I change the text box color with javascript when validation is false? For example, if I check for null validation then I enter nothing in the textbox, it should show the colour red in the textbox, indicating that you should enter something in the textbox.

Posted 20-Oct-10 21:14pm

Rajesh Yerramsetti

Updated 20-Oct-10 21:20pm

LittleYellowBird

v2

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2 solutions

Solution 1

function btn_validate_click(events){
   if(document.getelementbyid("textbox1").text + "" = ""){
       lblValidation.Text = "Nothing has been entered.";
       document.getelementbyid("textbox1").ForeColor = "Red";
       document.getelementbyid("textbox1").BackColor = "Yellow"; // or whatever colours u want.
    }
}

Posted 20-Oct-10 21:39pm

Sherylee

Updated 20-Oct-10 21:58pm

v2

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Dalek Dave 21-Oct-10 3:58am

Just to Code Block it!

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Hiren solanki · Accepted Answer · 2010-10-20T22:39:00

Solution 2

//C#
TextBox1.BackColor = System.Drawing.Color.Red;
//Javascript<br />
document.getElementById("TextBox1").style.backgroundColor = "#FF0000";

Please vote and Accept Answer if it Helped.

Posted 20-Oct-10 22:39pm

Hiren solanki