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Javascript: Как отловить направление свайпов

10.01.2019 0 comments » Views: 886

Javascript

Для одного из проектов, мне понадобилось сделать необычную прокрутку карточек по свайпам, тут оставляю код отвечающие за отлавливание свайпов..


var isMobile = false; //initiate as false

// device detection
if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|ipad|iris|kindle|Android|Silk|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i.test(navigator.userAgent)
        || /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(navigator.userAgent.substr(0,4))) {
    isMobile = true;
}

if (isMobile) {
    document.addEventListener('touchstart', handleTouchStart, false);
    document.addEventListener('touchmove', handleTouchMove, { passive: false });
}

var xDown = null;
var yDown = null;

function getTouches(evt) {
    return evt.touches ||           // browser API
    evt.originalEvent.touches; // jQuery
}

function handleTouchStart(evt) {
    const firstTouch = getTouches(evt)[0];
    xDown = firstTouch.clientX;
    yDown = firstTouch.clientY;
}

function handleTouchMove(evt) {
    	if ( ! xDown || ! yDown ) {
    	    evt.preventDefault();
            return false;
    	}

    	var swipeUp = false;
    	var swipeDown = false;
    	var swipeLeft = false;
    	var swipeRight = false;

    	var xUp = evt.touches[0].clientX;
    	var yUp = evt.touches[0].clientY;

    	var xDiff = xDown - xUp;
    	var yDiff = yDown - yUp;

    	if ( Math.abs( xDiff ) > Math.abs( yDiff ) ) {/*most significant*/
            	if ( xDiff > 0 ) { /* left swipe */
                	swipeLeft = true;
            	} else { /* right swipe */
                	swipeRight = true;
            	}
    	} else {
        	if ( yDiff > 0 ) { /* up swipe */
            	swipeUp = true;
        	} else { /* down swipe */
            	swipeDown = true;
        	}
    	}

    	/* reset values */
    	xDown = null;
    	yDown = null;

    	if (swipeLeft || swipeRight) {
            // произошел свайп вправо или влево
            .....
            // если надо остановить прокрутку то используем такие инструкции
            evt.preventDefault();
            evt.stopPropagation();
            return false;
    	}
    }
}

var isMobile = false; //initiate as false

// device detection

|| /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(navigator.userAgent.substr(0,4))) {

isMobile = true;

}

if (isMobile) {

document.addEventListener('touchstart', handleTouchStart, false);

document.addEventListener('touchmove', handleTouchMove, { passive: false });

}

var xDown = null;

var yDown = null;

function getTouches(evt) {

return evt.touches || // browser API

evt.originalEvent.touches; // jQuery

}

function handleTouchStart(evt) {

const firstTouch = getTouches(evt)[0];

xDown = firstTouch.clientX;

yDown = firstTouch.clientY;

}

function handleTouchMove(evt) {

if ( ! xDown || ! yDown ) {

evt.preventDefault();

return false;

}

var swipeUp = false;

var swipeDown = false;

var swipeLeft = false;

var swipeRight = false;

var xUp = evt.touches[0].clientX;

var yUp = evt.touches[0].clientY;

var xDiff = xDown - xUp;

var yDiff = yDown - yUp;

if ( Math.abs( xDiff ) > Math.abs( yDiff ) ) {/*most significant*/

if ( xDiff > 0 ) { /* left swipe */

swipeLeft = true;

} else { /* right swipe */

swipeRight = true;

}

} else {

if ( yDiff > 0 ) { /* up swipe */

swipeUp = true;

} else { /* down swipe */

swipeDown = true;

}

/* reset values */

xDown = null;

yDown = null;

if (swipeLeft || swipeRight) {

// произошел свайп вправо или влево

.....

// если надо остановить прокрутку то используем такие инструкции

evt.preventDefault();

evt.stopPropagation();

return false;

}

Author: Vitaly Orlov | Rating: 4/5 | Tags: javascript , jquery , swipe , touch

Javascript: Как отловить направление свайпов

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