build/iSlider.plugin.zoompic.js
function handleDoubleTap(evt) {
        var zoomFactor = zoomFactor || 2;
        var node = zoomNode;
        var pos = getPosition(node);
        currentScale = currentScale == 1 ? zoomFactor : 1;
        node.style.webkitTransform = generateTranslate(0, 0, 0, currentScale);
        if (currentScale != 1) node.style.webkitTransformOrigin = generateTransformOrigin(evt.touches[0].pageX - pos.left, evt.touches[0].pageY - pos.top);
    }
function handleDoubleTap(evt) {
        var zoomFactor = zoomFactor || 2;
        var node = zoomNode;
        var pos = getPosition(node);
        currentScale = currentScale == 1 ? zoomFactor : 1;
        node.style.webkitTransform = generateTranslate(0, 0, 0, currentScale);
        if (currentScale != 1) node.style.webkitTransformOrigin = generateTransformOrigin(evt.touches[0].pageX - pos.left, evt.touches[0].pageY - pos.top);
    }
function handleDoubleTap ( evt ) { var zoomFactor = zoomFactor || 2 ; var node = zoomNode ; var pos = getPosition ( node ) ; currentScale = currentScale == 1 ? zoomFactor : 1 ; node . style . webkitTransform = generateTranslate ( 0 , 0 , 0 , currentScale ) ; if ( currentScale != 1 ) node . style . webkitTransformOrigin = generateTransformOrigin ( evt . touches [ 0 ] . pageX - pos . left , evt . touches [ 0 ] . pageY - pos . top ) ; }
Double tao handle
@param {object} evt
Double tao handle