How do I activate a textbox if I select another option in a dropdown

Question

Please refer the attached word file where can see one combo box and another one is textbox.Please guide me.

Sachin Singh · Answer

you just need to enable or disable textbox based on selected Archive value and simple css for grey background .input-disabled {background-color:#EBEBE4;border:1px solid #ABADB3;padding:2px 1px;} $( "#Archive" ).Change(function(){ var val= $( this ).val(); if (val== "Yes" ) { $( '#txtCaseNumber' ).attr( 'readonly' , true ); $( '#txtCaseNumber' ).addClass( 'input-disabled' ); } else { $( '#txtCaseNumber' ).attr( 'readonly' , flase); $( '#txtCaseNumber' ).removeClass( 'input-disabled' ); } }) Archive "> Yes No Case No:

Amit Kumar · Answer

Hi, This problem is solved using two ways. 1. Server Side 2. Client Side Which one you want it is not clear in your questoion. If you want client side then I m strongly recommended to Sachin or if you want server side then confirm to me.

Rijwan Ansari · Answer

Would you please share the platfrom are you using? ASP.NET or window desktop.

Kiran Mohanty · Answer

you can use disabled attribute to achieve so. Note :- Latest browsers support disabled="disabled" but older versions used to support disabled="true". Please check you browser version compatibility and use value as "disabled" or "true" accordingly. $( "#dropdown" ).Change( function (){ var val= $( this ).val(); if (val=== "disable" ) /based on your condition { $( '#txtbox' ).attr( 'disabled' , 'disabled' ); } else { $( '#txtbox' ).removeAttr( 'disabled' ); } }) ;

Harsh Shah · Answer

Hi, Please refer to the below code... "text/javascript" > function CheckColors(val){ var element=document.getElementById( 'color' ); if (val== 'pick a color' ||val== 'others' ) element.style.display= 'block' ; else element.style.display= 'none' ; } "color" onchange= 'CheckColors(this.value);' > pick a color "red" >RED "blue" >BLUE "others" >others "text" name= "color" id= "color" style= 'display:none;' />

Yogeshkumar Hadiya · Answer

In win form you can enable textbox as below. if (dropdown1.Text=="YES"){ myTextBox.Enabled = true ; } else { myTextBox.Enabled = false ; }