鼠标弹起时防止默认

Question

此代码无效。如何防止结构中出现上下文菜单？

canvas.on('mouse:up', function(options) {
    if(options.target){
        switch(options.e.button){
            case 0:
                // left click
                break;
            case 2:
                // right click
                options.e.preventDefault();
                break;
        }
    }
});

Answer 1

您可以添加：

$('canvas').contextmenu( function() {
    return false;
});

canvas.on('mouse:up' 之外...

见jsFiddle