长按识别二维码
tips[index].onclick=function(){
var w = $("#app").width();
var h = $("#app").height();
var canvas=document.createElement("canvas")
canvas.width = w * 2;
canvas.height = h * 2;
canvas.style.width = w + "px";
canvas.style.height = h + "px";
var context = canvas.getContext("2d");
context.scale(2,2);
html2canvas($(\'#app\'),{
canvas:canvas,
onrendered: function (canvas) {
setTimeout(function(){
$(\'#app\').css(\'display\',\'none\')
$("#showimg").show()
$("#showimg").attr(\'src\', canvas.toDataURL());
},2000)
}
})
}