Question

我想在本地存储html5中存储多个动态图像，并在页面刷新时检索......

这是我的代码和jsfiddle

HTML

<ul class="lib">
    <li>
        <img class='my_image' src='http://wcdn1.dataknet.com/static/resources/icons/set95/5076c9d9.png'>
    </li>
    <li>
        <img class='my_image' src='http://cdn.mysitemyway.com/icons-watermarks/simple-black/raphael/raphael_gear-small/raphael_gear-small_simple-black_128x128.png'>
    </li>
</ul>Click the image to make clone and then click save btn to store in local sorage html5 and after that refresh to retreave the images in below box
<div class="block" id="block_test"></div>
<input id="button" type="button" value="save">

CSS

.lib {
    border:1px solid #000;
}
.lib li {
    display:inline;
}
.lib img {
    width:100px;
}
#block_test {
    border:1px solid #000;
    height:300px;
}

JS

$(".my_image").click(function () {
    $(this).clone().addClass('input').removeClass('my_image').appendTo(".block").freetrans({
        x: 0,
        y: 0
    });
});

function setBackground() {
    localStorage.input = $(".input").attr('src');
}

function loadBackground() {
    if (localStorage.input.length == 0) {
        localStorage.input = "empty";
    } else {
        var img_elem = $('<img id="output">');
        img_elem.attr('src', localStorage.input).addClass('input').removeClass('my_image').appendTo(".block").freetrans({
            x: 0,
            y: 0
        });

        localStorage.input = $(arr[0]).attr('src');
    }
}

$("#button").click(function () {
    setBackground();
});

链接到jsfiddle http://jsfiddle.net/fq58hrh1/14/

提前致谢。我希望我清楚我的问题

Answer 1

使用localStorage是代码中的错误，下面我解释一下

使用window.localStorage - 存储没有过期日期的数据当您需要设置应在下一页或重新加载后反映的变量时，请使用：

var someVarName =“value”; localStorage.setItem（“someVarName”，someVarName）;

在任何页面中（例如页面加载时），请将其命名为：

var getVarName = localStorage.getItem("someVarName");

.getItem（）将返回null或存储的值。

您更新的javascript如下

$(".my_image").click(function () {     $(this).clone().addClass('input').removeClass('my_image').appendTo(".block").freetrans({
        x: 0,
        y: 0
    });
});

function setBackground() {
    localStorage.setItem("someVarName", $("#block_test").html());
}

function loadBackground() {
    if(localStorage.getItem("someVarName")!=null){
        var storedImages = localStorage.getItem("someVarName");
        $("#block_test").html(storedImages)
    } else {
        $("#block_test").html("No Images Yet");
    }
}

$("#button").click(function () {
    setBackground();
});

$(document).ready(function () {
    loadBackground();
});

我提供了一个更新的演示http://jsfiddle.net/fq58hrh1/29/要测试它，请单击图像，然后保存，然后重新加载页面。

刷新页面后为什么没有检索到Img？

1 个答案: