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我有問題,使用html2canvas
和canvas2image
。我使用此代碼:保存爲圖像後保留元素大小
$('#preview').click(function() {
var scaleBy = 5;
var w = 1000;
var h = 1000;
var div = document.querySelector('#screenshot');
var canvas = document.createElement('canvas');
canvas.width = w * scaleBy;
canvas.height = h * scaleBy;
canvas.style.width = w + 'px';
canvas.style.height = h + 'px';
var context = canvas.getContext('2d');
context.scale(scaleBy, scaleBy);
html2canvas(div, {
canvas:canvas,
onrendered: function (canvas) {
theCanvas = canvas;
var dataString = canvas.toDataURL("image/png");
var link = document.createElement("a");
link.download = 'image';
link.href = dataString;
link.click();
}
});
});
#preview
是用於保存圖像的按鈕ID,問題是,當我將圖像保存爲它png格式其獲得更多的空間。像這樣http://imgur.com/2EdlhX9。將圖像保存爲圖像後,如何將圖像的大小設置爲相同?謝謝..
您可以從解釋爲什麼將畫布尺寸設置爲5000x5000開始? – Cauterite
我改變了它2000年,但它仍然沒有改變任何東西,爲什麼我使用規模是爲了使圖像unblurry @Cauterite –