js 页面按钮提交后 创建显示loading div 操作完成后 再隐藏或删除 进度div

时间：2023-01-27 02:37:38

预期效果：

1、点击Save按钮，创建及显示loading div框

2、Save操作完成后，再删除loading 及弹出提示结果

<html>

<head>

</head>

<body>

    <input type="button" value="Save" name="btnSave" />

</body>

</html>

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js" type="text/javascript"></script>

<script type="text/javascript">

function loadingShow(){

    var loadingContainer = $("div.loading");

    if (loadingContainer.length <= 0) {

        loadingContainer = $("<div>", { Class: "loadingWhenSave" , id:"loadingWhenSave" });

        var img = $("<img>", { src: "loading.gif" });

        loadingContainer.html("");

        loadingContainer.append(img).css({

            position: "absolute", //"absolute",

            zIndex: "9999",

            textAlign: "center",

            backgroundColor: "#000",

            border: "solid 4px red",

            paddingTop: "18px",

            fontSize: "14px",

            top: "30%",

            left: "40%",

            height: "300px",

            width: "400px"

        });

        //document.body.appendChild(loadingContainer);

        loadingContainer.appendTo('body');

    }

    //$(loadingContainer).show();

}

function loadingHide(){

    $("#loadingWhenSave").remove();

}

function saveFinished(){

    //loadingHide();

    alert("save success.");

}

$(document).ready(function(){

    $(btnSave).click(function(){

        loadingShow();

        setTimeout("saveFinished()",2000);

    });

});

</script>

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