javascript - 将特定字符串添加到对象数组中具有条件的对象数据

Question

我有一个对象数组，如果它以“//”开头，我会尝试修改它的值。如果满足条件，我想在此之前添加“https:”。那么该值应该类似于“https://”。我做了以下事情。无法弄清楚问题出在哪里。

var projects = [
{
    value: "//",
    label: "jQuery",
    desc: "the write less, do more, JavaScript library",
    icon: "jquery_32x32.png"
},
{
    value: "//",
    label: "jQuery UI",
    desc: "the official user interface library for jQuery",
    icon: "jqueryui_32x32.png"
}];
const string1 = "https:";
const objIndex = projects.findIndex(obj => obj.value.indexOf('/') === 0 ? obj.value === string1.concat(obj.value): obj.value === obj.value );console.log(objIndex);

Answer 1

首先，你的字符串变量定义有误，你在这里使用了不同的引号字符:const string1 = 'https:";您可以使用“reduce”创建一个新数组。

let projects = [
{
    value: "//google.com",
    label: "jQuery",
    desc: "the write less, do more, JavaScript library",
    icon: "jquery_32x32.png"
},
{
    value: "//",
    label: "jQuery UI",
    desc: "the official user interface library for jQuery",
    icon: "jqueryui_32x32.png"
}];
let stringToReplace = "https:";
let objIndex = projects.reduce((arr, item) => (item.value = item.value.replace(/(\/\/.*)/, `${stringToReplace}$1`), arr.push(item), arr), []);
console.log(objIndex);