JavaScript之清除数组空值项包括空数组空对象isArraystringifypushcontinuelength

Posted 2022-03-02 web半晨

function cleanArray(actual) 
    let newArray = [],
        i = 0,
        item = null;

    for (; i < actual.length; i++) 
        item = actual[i];
        if (item != null && item != undefined && item != '') 
            if (Array.isArray(item) && !item.length) continue;
            if (JSON.stringify(item) == "") continue;

            newArray.push(item);
        
    
    return newArray;

let data = [3, undefined, 6, null, 7, '', [9], [], name: '舒冬', , 5, '半晨'];
console.log(cleanArray(data));
// [3, 6, 7, Array(1), …, 5, '半晨']