黏贴图片

gistfile1.js

document.getElementById("rte").focus();
document.body.addEventListener("paste", function(e) {
    for (var i = 0; i < e.clipboardData.items.length; i++) {
        if (e.clipboardData.items[i].kind == "file" && e.clipboardData.items[i].type == "image/png") {
            // get the blob
            var imageFile = e.clipboardData.items[i].getAsFile();

            // read the blob as a data URL
            var fileReader = new FileReader();
            fileReader.onloadend = function(e) {
                // create an image
                var image = document.createElement("IMG");
                image.src = this.result;

                // insert the image
                var range = window.getSelection().getRangeAt(0);
                range.insertNode(image);
                range.collapse(false);

                // set the selection to after the image
                var selection = window.getSelection();
                selection.removeAllRanges();
                selection.addRange(range);
            };

            // TODO: Error Handling!
            // fileReader.onerror = ...

            fileReader.readAsDataURL(imageFile);

            // prevent the default paste action
            e.preventDefault();

            // only paste 1 image at a time
            break;
        }
    }
});