CODEWITHSUNDEEP
javascriptjqueryhtmldomuser-input
Rofi Fathurrohman
Rofi Fathurrohman

Reputation: 167

Javascript function to show text if i input value

To the point, if i input value "20" in input field then show message "Thank you".

Here's my HTML Code:

<form method="post" action="">
<input type="text" id="nominal" value="">
<input type="submit" value="submit">
</form>

Here's my JS Code:

$(document).ready(function(){

    var money = 20;

    /* not sure if this is written correctly, but this is supposed to
    check whether the hidden input element value is equal to var money */

    if ($("input[id='nominal']").val() == money )  {

     var h = document.createElement("H1")                // Create a <h1> element
     var t = document.createTextNode("Thank You");     // Create a text node
     h.appendChild(t);                                   // Append the text to <h1>

    };
});

i've created one script to fulfill what I need, but not working! what's wrong?

My JDFIDDLE LINK

Upvotes: 1

Views: 2007

Answers (2)

eisbehr
eisbehr

Reputation: 12452

You have to create an event to listening for changes, in this case changed. And you can make your code a bit smaller too. ;)

$(function() {
    $("#nominal").change(function() {
        if( $(this).val() == 20 )
            $(this).after("<h1>Thank You</h1>");
    });
});

Full working exaple with removing the message when value changes again and strict check can be seen here.

Upvotes: 2

Dhara Parmar
Dhara Parmar

Reputation: 8101

$(document).ready(function(){
    var money = 20;
    $("#nominal").change(function() { // take change event of input box
       if ($(this).val() == money )  { // use $(this) to take value
          var h = document.createElement("H1"); // Create a <h1> element
          var t = document.createTextNode("Thank You"); // Create a text node
          h.appendChild(t);      
          $('form').append(h); // append created h1 element in form/html
       } else {
          $('form').find("h1").remove();
       }
     })
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<form method="post" action="">
<input type="text" id="nominal" value="">
<input type="button" value="submit" name="submit" id="submit">
</form>

Upvotes: 2

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