JW/EMIS.Web/Scripts/Business/CultureplanManage/CoursematerialEdit.js

//加载
$(function () {
    $("#CourseName").blur(function () {
        var courseName = $(this).val();
        var abbreviation = $("#Abbreviation").val()
        var standardName = $("#StandardName").val();
        if (abbreviation == null || abbreviation == "") {
            $("#Abbreviation").val(courseName);
        }
        if (standardName == null || standardName == "") {
            $("#StandardName").val(courseName);
        }
    }); 
})

//保存
function Coursematerial_Save() {
    $(document.forms[0]).submit();
}

//---
function previewImage(file, prvid) {
    /* file：file控件 
    * prvid: 图片预览容器 
    */
    var tip = "Expect jpg or png or gif!"; // 设定提示信息 
    var filters = {
        "jpeg": "/9j/4",
        "gif": "R0lGOD",
        "png": "iVBORw"
    }
    var prvbox = document.getElementById(prvid);
    prvbox.innerHTML = "";
    if (window.FileReader) { // html5方案 
        for (var i = 0, f; f = file.files[i]; i++) {
            var fr = new FileReader();
            fr.onload = function (e) {
                var src = e.target.result;
                if (!validateImg(src)) {
                    alert(tip)
                } else {
                    showPrvImg(src);
                }
            }
            fr.readAsDataURL(f);
        }
    } else { // 降级处理

        if (!/\.jpg$|\.png$|\.gif$/i.test(file.value)) {
            alert(tip);
        } else {
            showPrvImg(file.value);
        }
    }

    function validateImg(data) {
        var pos = data.indexOf(",") + 1;
        for (var e in filters) {
            if (data.indexOf(filters[e]) === pos) {
                return e;
            }
        }
        return null;
    }

    function showPrvImg(src) {
        var img = document.createElement("img");
        img.src = src;
        prvbox.appendChild(img);
    }
}