使用本地存储存储“已检查"复选框以存储多个项目 [英] Store Checkbox 'Checked' with localstorage for multiple items

问题描述

我想将复选框保存到本地存储，但是我正在使用的这段代码对于多个复选框来说太麻烦了…….有没有更好的方法呢?

I want to save my checkboxes to localstorage, but this code I am using would be too cumbersome for multiple checkboxes.... is there a better way to do this?

setStatus = document.getElementById('LineOp');
setStatus.onclick = function() {
    if(document.getElementById('LineOp').checked) {
        localStorage.setItem('LineOp', "true");
    } else {
        localStorage.setItem('LineOp', "false");
    }
}


getStstus = localStorage.getItem('LineOp');
if (getStstus == "true") {
    alert("Welcome Back");
    document.getElementById("LineOp").checked = true;
} else {
    console.log("News");
}

推荐答案

在这里，您可以根据需要放置任意多个复选框，只需添加具有本地存储唯一标识符的store属性. JSFiddle

Here is a way where you could put as many checkboxes as you want, just add the store attribute with a unique identifier for local storage. JSFiddle

var boxes = document.querySelectorAll("input[type='checkbox']");

for (var i = 0; i < boxes.length; i++) {
    var box = boxes[i];
    if (box.hasAttribute("store")) {
        setupBox(box);
    }
}

function setupBox(box) {
    var storageId = box.getAttribute("store");
    var oldVal    = localStorage.getItem(storageId);
    box.checked = oldVal === "true" ? true : false;

    box.addEventListener("change", function() {
        localStorage.setItem(storageId, this.checked); 
    });
}

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