数组去空的方法

    var arr = ['A', '', 'B', null, undefined, 'C', '  '];
    var r = arr.filter((s) => {
    return s && s.trim();     // 注：IE9(不包含IE9)以下的版本没有trim()方法
    });
    console.log(r);          //打印结果： ["A", "B", "C"]

var arr = ['A', '', 'B', null, undefined, 'C', '  ','D','feiniaomy.com'];
//自定义过滤函数
function trimSpace(array){  
    for(var i = 0 ;i<array.length;i++)  
    {  
       //这里为过滤的值
        if(array[i] == " " || array[i] == null || typeof(array[i]) == "undefined" || array[i] == '  ' )  
        {  
            array.splice(i,1);
            i= i-1;
        }  
    }  
    return array;  
}  
console.log(trimSpace(arr));

https://blog.csdn.net/qq_40999917/article/details/119943316