如果數組中存在假值，則返回

Question

我想發生的是，如果任何值都是虛假的，則僅返回錯誤，而永不返回萬歲。 我正在使用lodash 。

var jawn = [
    {
        "cheese"  : true,
        "with"    : true,
        "without" : true
    },
    {
        "cheese"  : true,
        "with"    : true,
        "without" : true
    },
    {
        "cheese"  : true,
        "with"    : false,
        "without" : true
    },
    {
        "cheese"  : true,
        "with"    : true,
        "without" : true
    }      
];

_.forEach(jawn, function (item) {
    if(item.with === false) {
        console.log('error');
    } else {
        console.log('hooray');
    }
});

Answer 1

由於您使用的是undescore，請檢查Collections.every / all ：

const msg = _(jawn).all(obj => obj.with) ? "hooray" : "error";
console.log(msg);

Answer 2

 var jawn = [{ "cheese": true, "with": true, "without": true }, { "cheese": true, "with": true, "without": true }, { "cheese": true, "with": false, "without": true }, { "cheese": true, "with": true, "without": true } ]; const msg = jawn.some(item => !item.with) ? "error" : "hooray"; console.log(msg);