admin管理员组

文章数量:1350338

How can one automatically translate long tap events to right click events? Since many touch devices like the iPad don't provide a way to do a right click on a website this would be very handy because a website's code doesn't need to be adjusted.

For example this code is designed for desktop browser having mouse support:

<html>
    <head><title>Long tap to right click test</title></head>
    <body>
        <img src="dummy.png" oncontextmenu="alert('Hi!'); return false;" width="20" height="20" />
    </body>
</html>

The goal is to translate a long tap event to the right click event without modifying the code. (Just loading some JavaScript, of course.)

If've seen that / does something similar for drag'n'drop support on jQuery widgets. However this plugin doesn't support the long tap.

Also / does actually perform the desired translation but it brakes scrolling, thus making it useless for regular websites with the need of scroll support.

Any help is appreciated - thanks!

How can one automatically translate long tap events to right click events? Since many touch devices like the iPad don't provide a way to do a right click on a website this would be very handy because a website's code doesn't need to be adjusted.

For example this code is designed for desktop browser having mouse support:

<html>
    <head><title>Long tap to right click test</title></head>
    <body>
        <img src="dummy.png" oncontextmenu="alert('Hi!'); return false;" width="20" height="20" />
    </body>
</html>

The goal is to translate a long tap event to the right click event without modifying the code. (Just loading some JavaScript, of course.)

If've seen that https://github./furf/jquery-ui-touch-punch/ does something similar for drag'n'drop support on jQuery widgets. However this plugin doesn't support the long tap.

Also http://code.google./p/jquery-ui-for-ipad-and-iphone/ does actually perform the desired translation but it brakes scrolling, thus making it useless for regular websites with the need of scroll support.

Any help is appreciated - thanks!

  • javascript
  • jquery
  • events
  • touch
Share Improve this question asked Feb 14, 2013 at 13:50 jorjor 2,1554 gold badges27 silver badges46 bronze badges
Add a ment  | 

3 Answers 3

Reset to default 6

You can write simple plugin to handle this type of events. Lets call it longTap event. Example:

$.fn.longTap = function(options) {

    options = $.extend({
        delay: 1000,
        onRelease: null
    }, options);

    var eventType = {
        mousedown: 'ontouchstart' in window ? 'touchstart' : 'mousedown',
        mouseup: 'ontouchend' in window ? 'touchend' : 'mouseup'
    };

    return this.each(function() {
        $(this).on(eventType.mousedown + '.longtap', function() {
            $(this).data('touchstart', +new Date);
        })
        .on(eventType.mouseup + '.longtap', function(e) {
            var now = +new Date,
                than = $(this).data('touchstart');
            now - than >= options.delay && options.onRelease && options.onRelease.call(this, e);
        });
    });
};

Obviously you want to change mousedown and mouseup to touchstart and touchend in case of iPad.

Usage: http://jsfiddle/dfsq/RZgxT/1/

You can use a timeout for that:

var timeoutLongTouch;
var $mydiv = $j('#myDiv');

// Listen to mousedown event
$mydiv.on('mousedown.LongTouch', function () {
    timeoutLongTouch = setTimeout(function () {
        $mydiv.trigger('contextmenu');
    }, 1000);
})
// Listen to mouseup event
.on('mouseup.LongTouch', function () {
    // Prevent long touch 
    clearTimeout(timeoutLongTouch);
});

All solutions not work in desktop browsers. You should also tune up 'click' handler behaviour, cause all 'longtap' events should also be followed by 'click' event.

In this case something code like this:

itemEl.click(function(event){

    if ($(this).data('itemlongtouch')){
        $(this).data('itemlongtouch', false);
    }else{
        //some work
    }
});

itemEl.longTap(function(event){
    $(this).data('itemlongtouch', true);
    //some work
});

本文标签： jqueryJavaScript translate long tap events to right click eventsStack Overflow

版权声明：本文标题：jquery - JavaScript: translate long tap events to right click events - Stack Overflow 内容由网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：http://www.betaflare.com/web/1743876847a2554484.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。