序
接上篇文章，上篇文章，我们大概实现了signlar的相互通知、发送消息的功能，但是一个webim怎么可以没有表情、怎么可以不能发送文件呢，这期我们主要说下发送表情、以及文件。
核心代码
// 选择表情
function selectEmoji() {
if (!isSelectEmoji) {
var emojiHtml = "";
for (var i = 1; i <= 130; i++) {
emojiHtml += "<span><img onclick='chatemojiSelect(this)' src='/ChatHubTemplateHtml/Images/chatemoji/" + i + ".gif' /></span>";
}
$("#chatemojiPanel").html(emojiHtml);
$("#chatemojiPanel").show();
isSelectEmoji = true;
} else {
$("#chatemojiPanel").hide();
isSelectEmoji = false;
}
}
function chatemojiSelect(obj) {
var emojiSrc = $(obj).attr("src");
var originHref = window.location.origin;
var imageHref = originHref + emojiSrc;
$("#chatemojiPanel").hide();
$("#NeedSendMsg").html($("#NeedSendMsg").html() + "<img src='"+imageHref+"' style='max-width:265px' />");
}
function UploadImage() {
$("#supercode_UploadImage").click();
}
// 发送图片
function UploadImageChange(obj) {
var imageFile = obj.files[0];
var imageName = imageFile.name;
var imageSize = imageFile.size;
var imageType = imageFile.type;
var msgHtml = "";
var imagereads = new FileReader();
imagereads.readAsDataURL(imageFile);
var imageSrc = "";
$("#uploadfileInfoTip").show();
var title = document.getElementById("uploadfileInfoTip_title");
title.innerHTML = imageName;
imagereads.onload = function(evt) {
imageSrc = evt.target.result;
if (imageSrc != "") {
//创建formdata对象
var formdata = new FormData();
formdata.append("fileFolder", "chatRecordImage");
formdata.append("file", obj.files[0]);
chatService.UploadFileRequest("/api/Upload/UploadFile", formdata, function (res) {
var data = JSON.parse(res.target.responseText);
if (data.Issuccess) {
var imageHref = data.Data[0].Url
$("#NeedSendMsg").html($("#NeedSendMsg").html() + "<img src='"+imageHref+"' style='max-width:265px' />");
}else{
alert("上传失败！");
}
$("#uploadfileInfoTip").hide();
$("#supercode_UploadImage").val("");
}, function (err) {
console.log("err")
console.log(err)
}, function (evt) {
console.log(evt)
var progressBar = document.getElementById("uploadfileInfoTip_bar");
// event.total是需要传输的总字节，event.loaded是已经传输的字节。如果event.lengthComputable不为真，则event.total等于0
if (evt.lengthComputable) {
progressBar.innerHTML = Math.round(evt.loaded / evt.total * 100) + "%";
}
});
}
};
}效果图
