var imageUrl = {};
function convertToDataURLviaCanvas(url, item, outputFormat){
var img = new Image();
img.onload = function(){
var canvas = document.createElement('CANVAS');
var ctx = canvas.getContext('2d');
var dataURL;
canvas.height = this.height;
canvas.width = this.width;
ctx.drawImage(this, 0, 0);
dataURL = canvas.toDataURL();
storemapImage(item, dataURL);
console.log(imageUrl);
};
}
function storemapImage(propertyName, url){
imageUrl[propertyName] = {
objectImage: url
};
return;
}
var src = "http://orig11.deviantart.net/c565/f/2013/092/1/6/mario_pixel_by_juli95-d607odz.png"
function capture(){
convertToDataURLviaCanvas(src, "display1", "Image/png");
}
我的意圖是把一個普通的PNG圖像爲JSON數據,然後存儲到對象(IMAGEURL),這是我的代碼,我測試了很多,但仍然沒有從它得到任何東西,任何人都可以看看我?把一個普通的PNG圖像爲JSON數據,然後存儲到對象