CODEWITHSUNDEEP
javascripthtml
Imranul Hoque Limon
Imranul Hoque Limon

Reputation: 156

Show error using javascript

Using javascript i want to show error message, and the message will hide/disappear after 2 second . The error show perfectly and hide after 2 second but it does not work for the second time. if i reload my page it work perfectly again and so on.

JavaScript

if(task_hour == "hour" || task_minute == "minute"){

        document.getElementById("error").innerHTML = "Add Time for the Task";
        setTimeout(function(){ document.getElementById("error").style.display="none"; }, 2000);

        return false;
    }

HTML

<div id="errordiv" align="center" style="margin-left: auto; margin-right: auto;"> 
   <span id="error" style="color: red"> </span> 
</div>

Upvotes: 3

Views: 8299

Answers (2)

Kirill Pisarev
Kirill Pisarev

Reputation: 843

The second error appears in hiden div

you have to create a span, append it to wrapper with error text and after 2 seconds destroy it:

function showError(message){
    var span = document.createElement('span');
    var errorWrap = document.getElementById("error");

    span.appendChild(document.createTextNode(message));
    errorWrap.appendChild(span);

    setTimeout(function(){ span.parentNode.removeChild(span); }, 2000);

    return false;
}

if(task_hour == "hour" || task_minute == "minute"){
    showError('Add Time for the Task');
}

see

Upvotes: 0

Andrew Dunai
Andrew Dunai

Reputation: 3129

You should set the div to be initially hidden (display: none) and use display: block to show it:

JS:

var timer = null;

function showError(message) {
    if (timer !== null) {
        // Clear previous timeout:
        clearTimeout(timer);
        timer = null;
    }
    var errorElement = document.getElementById("error");
    errorElement.innerHTML = message;
    errorElement.style.display = 'block';
    timer = setTimeout(function(){ errorElement.style.display = 'none'; }, 2000);
}

showError('Error!');

HTML:

<div id="errordiv" align="center" style="margin-left: auto; margin-right: auto;"> 
    <span id="error" style="color: red; display: none"></span> 
</div>

Upvotes: 5

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