Message:

IMPORTANT : ABOVE SNIPPET DOES WORK !

Hey guys,

I don't know why but this basic verification that input is not empty don't work :

<input type="text" class="form-control" id="title" name="title" placeholder="Title" value="<?= $title ?>" onblur="submit_basic_info()">



<input type="text" class="form-control" id="interpreter" name="interpreter" placeholder="Interpret" value="<?= $interpreter ?>" onblur="submit_basic_info()">



<button type="submit" id="submit_info_button" class="btn btn-primary">Submit</button>



    

<script>

function submit_basic_info() {

                                

    var get_title = document.getElementById("title").value;

    var get_interpreter = document.getElementById("interpreter").value;



    console.log(get_title);

    console.log(get_interpreter);



    if (get_title === "" || get_interpreter === "" ) {



        console.log('if');



        document.getElementById("submit_basic_info").innerHTML = "Please Fill-In every input";

        document.getElementById('submit_info_button').disabled = true;



    } else {



        console.log('else');



        document.getElementById("submit_basic_info").innerHTML = "";

        document.getElementById('submit_info_button').disabled = false;



    }

}

</script>

I can see that here in the snippet it work... but why doesn't it in my web page ? Because value is a PHP value ? Because form is inside a modal ?

I've been stuck on this for hours and I can't find any solution...

Help appreciated... :)

function submit_basic_info() {



  var get_title = document.getElementById("title").value;

  var get_interpreter = document.getElementById("interpreter").value;



  console.log(get_title);

  console.log(get_interpreter);



  if (get_title === "" || get_interpreter === "") {



    console.log('if');



    document.getElementById("submit_basic_info").innerHTML = "Please Fill-In every input";

    document.getElementById('submit_info_button').disabled = true;



  } else {



    console.log('else');



    document.getElementById("submit_basic_info").innerHTML = "";

    document.getElementById('submit_info_button').disabled = false;



  }

}

<input type="text" class="form-control" id="title" name="title" placeholder="Title" value="" onblur="submit_basic_info()">





<input type="text" class="form-control" id="interpreter" name="interpreter" placeholder="Interpret" value="" onblur="submit_basic_info()">



<span id="submit_basic_info">



                                </span>

<button type="submit" id="submit_info_button" class="btn btn-primary">Submit</button>

My Answer:
To get the value of an element with a specific id using JavaScript, you can use the `getElementById` method to select the element and then access its `value` property. Here's an example:

html







  Get Element By Id Value

In this example, we have an input element with the id "myInput" and a button that, when clicked, calls the `getValue` function. Inside the function, we use `getElementById` to select the input element and then access its `value` property to get the value. Finally, we display an alert with the value of the element.

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John Davidson

javascript - getElementById value doesn't work and I have no idea why (PHP ? Modal ?)

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