SOURCE

window.onload = function() {

    // 同时按下两个手指

    document.addEventListener('touchstart', function(event) {

        if(event.touches.length > 1) {

            event.preventDefault()

        }

    })

    var lastTouchEnd = 0;

    // 特别注意300ms时差的设置

    document.addEventListener('touchend', function(event) {

        var now = (new Date()).getTime();

        if(now-lastTouchEnd <= 300) {

            event.preventDefault();

        }

        lastTouchEnd = now;

    })

}