我正试图在淡紫色线右侧获取图像的屏幕截图(所以在“今天的装备”标题下方(截图如下)。
我正在使用html2canvas来执行此操作,但每次单击“快照”按钮时,我都会获得一个空白屏幕截图。
这是我的HTML:
<div id="sidebar"><br/><center><h1 class = "outfitheading">Today's Outfit</h1></center>
<div id = "outfit">
<center><div class = "clothediv" id = "hatdiv" class="dropzone" ondrop="drop(event)" ondragover="allowDrop(event)">
</div></center>
<center><div class = "clothediv" id= "semitopdiv" class="dropzone" ondrop="drop(event)" ondragover="allowDrop(event)">
</div></center>
<center><div class = "clothediv" id = "topdiv" class="dropzone" ondrop="drop(event)" ondragover="allowDrop(event)">
</div></center>
<center><div class = "clothediv" id = "legweardiv" class="dropzone" ondrop="drop(event)" ondragover="allowDrop(event)">
</div></center>
<center><div class = "clothediv" id = "shoediv" class="dropzone" ondrop="drop(event)" ondragover="allowDrop(event)">
</div></center>
</div>
<button onclick="takeScreenShot()">Snapshot</button>
<center><div id= "likebutton" style = "display:none; visibility: hidden">
<a href = "#" ><i id = "outlinehearticon" class="fa fa-heart-o fa-2x" aria-hidden="true" onclick = {fillHeart()}></i></a>
<a href = "#" ><i id = "filledhearticon" class="fa fa-heart fa-2x" aria-hidden="true" style = "display:none; visibility: visible" onclick = {unfillHeart()}></i></a>
<script>
$(document).ready(function(){
$('[data-toggle="popover"]').popover();
});
</script>
</div></center>
<br/>
<br/>
<div class = "buttons"><center>
<button class = "btn btn-lg btn-secondary generatebutton" style = "display: inline-block" type = "button" id= "generateoutfitbutton" onclick = {generateOutfit()}>Generate Outfit</button>
<!--<p><center>or</center></p>-->
 
 
<button class = "btn btn-lg btn-secondary collagebutton" style = "display: inline-block" type = "button" id= "collagebutton" onclick = {clearCanvas()}>Make your Own</button></center>
</div>
</div>
这是我的javascript:
var takeScreenShot = function() {
html2canvas(document.getElementById("outfit"), {
onrendered: function (canvas) {
var tempcanvas=document.createElement('canvas');
tempcanvas.width=465.5;
tempcanvas.height=524;
var context=tempcanvas.getContext('2d');
context.drawImage(canvas,465.5,40,465.5,524,0,0,465.5,524);
var link=document.createElement("a");
link.href=tempcanvas.toDataURL('image/jpg'); //function blocks CORS
link.download = 'screenshot.jpg';
link.click();
}
});
}
这是我的代码的缩写jsfiddle: https://jsfiddle.net/e51yepcz/
有谁知道为什么快照不起作用或我如何修复它?感谢。
答案 0 :(得分:0)
我编辑了你的小提琴并得到了以下错误:
未捕获的ReferenceError:未定义takeScreenShot
所以我改变了一些东西,似乎有效。
我在你的按钮上添加了一个ID:
case REMOVE_CART:
return {
...state,
cart: state.cart.filter((item) => payload !== item)
}
和javascript事件(jQuery):
<center><button id="snap">Snapshot</button></center>
以下是JsFiddle