javascript - Set text for table with double click - Stack Overflow

admin管理员组

文章数量:1344946

I have several tables with ajax loaded content. Sometimes I have to change the content of a td manually before exporting it to PDF, so I thought best way would be to create a trigger for each td on double-click using jQuery's .dblclick(). The trigger would open a modal with an input field and change the text of the double-clicked td when submitting the modal.

This works, but when I change the content of a second, third, etc td, each previously clicked td gets the new value too.

Check my fiddle: /

My code so far:

$( ".sitename" ).dblclick( function() {
    var sitename = $( this );
    $( "#msgBox .modal-title" ).html("Change sitename");
    $( "#msgBox .modal-body" ).html("Enter new sitename:<input type=\"text\" id=\"new_sitename\">");
    $( "#msgBox" ).modal("show");
    $( "#msgBox button.btn" ).click( function() {
    sitename.text( $( "#new_sitename" ).val().trim() );
});

});

I have several tables with ajax loaded content. Sometimes I have to change the content of a td manually before exporting it to PDF, so I thought best way would be to create a trigger for each td on double-click using jQuery's .dblclick(). The trigger would open a modal with an input field and change the text of the double-clicked td when submitting the modal.

This works, but when I change the content of a second, third, etc td, each previously clicked td gets the new value too.

Check my fiddle: https://jsfiddle/fvoufq07/

My code so far:

$( ".sitename" ).dblclick( function() {
    var sitename = $( this );
    $( "#msgBox .modal-title" ).html("Change sitename");
    $( "#msgBox .modal-body" ).html("Enter new sitename:<input type=\"text\" id=\"new_sitename\">");
    $( "#msgBox" ).modal("show");
    $( "#msgBox button.btn" ).click( function() {
    sitename.text( $( "#new_sitename" ).val().trim() );
});

});

• javascript
• jquery
• jquery-events

Share Follow edited May 17, 2019 at 10:17 Brian Tompsett - 汤莱恩 5,8937272 gold badges6161 silver badges133133 bronze badges asked Oct 16, 2015 at 9:16 DaFunkyAlexDaFunkyAlex 1,96922 gold badges2525 silver badges3636 bronze badges

Add a ment  | 

4 Answers 4

Sorted by: Reset to default 5

It's because you re-use the same button for the modal. So everytime the modal is opened, you add a new listener on the button, but you don't kill the previous one.

You can kill a previous listener with off :

$( ".sitename" ).dblclick( function() {
    var sitename = $( this );

    $( "#msgBox .modal-title" ).html("Change sitename");
    $( "#msgBox .modal-body" ).html("Enter new sitename:<input type=\"text\" id=\"new_sitename\">");
    $( "#msgBox" ).modal("show");
    $( "#msgBox button.btn" ).off('click').click( function() {
        sitename.text( $( "#new_sitename" ).val().trim() );
    });

});

The problem you're seeing is that the click function you add to the button

$( "#msgBox button.btn" ).click( function() {
    sitename.text( $( "#new_sitename" ).val().trim() );
});

is not removed. Because of this, every time you open the model anew, you change the text of any previously clicked .sitename as well as the newly clicked one.

In order to avoid this, you should remove the click event, or better yet use jQuery's .one() function which will only fire the callback on the first instance of an trigger event:

$( "#msgBox button.btn" ).one('click', function() {
    sitename.text( $( "#new_sitename" ).val().trim() );
});

Updated fiddle: https://jsfiddle/fvoufq07/6/

Update: The above solution doesn't catch the problem of opening the modal then closing without clicking the "close" save button.

There are a couple of ways to fix this: either use .off() before adding the new .one() callback, or again use .off(), but conditionally upon the modal closing using bootstap's hidden.bs.modal trigger.

$( "#msgBox" ).one('hidden.bs.modal', function() {
    $( "#msgBox button.btn" ).off('click');
});

You might also want to assign the 'click' listener to a variable so that you can remove that listener specifically, which will be useful if you have other 'click' listeners on the same element.

var updateText = $( "#msgBox button.btn" ).one('click', function() {
    ...
});
$( "#msgBox" ).one('hidden.bs.modal', function() {
    $( "#msgBox button.btn" ).off('click', updateText);
});

Updated fiddle at https://jsfiddle/fvoufq07/7/ has an example.

Try this

var sitename;
$( ".sitename" ).dblclick( function() {
    sitename = $(this);
    $( "#msgBox .modal-title" ).html("Change sitename ");
    $( "#msgBox .modal-body" ).html("Enter new sitename:<input type=\"text\" id=\"new_sitename\">");
    $( "#msgBox" ).modal("show");
});

$( "#msgBox button.btn" ).click( function() {
        $(sitename).text( $( "#new_sitename" ).val().trim() );
    });

here is updated jsfiddle

try this

$( ".sitename" ).dblclick( function() {
sitename = $( this );
$( "#msgBox .modal-title" ).html("Change sitename");
$( "#msgBox .modal-body" ).html("Enter new sitename:<input type=\"text\" id=\"new_sitename\">");
$( "#msgBox" ).modal("show");
$( "#msgBox button.btn" ).click( function() {
    sitename.text( $( "#new_sitename" ).val().trim() );
});

});

Krupesh Kotecha beat me too it ;)

本文标签： javascriptSet text for table with double clickStack Overflow