前端：JS方法总结（一）

删除数组内指定项（未知索引的情况下）

Array.prototype.indexOf = function(val) {
for (var i = 0; i < this.length; i++) {
if (this[i] == val) return i;
}
return -1;
};
Array.prototype.remove = function(val) {
var index = this.indexOf(val);
if (index > -1) {
this.splice(index, 1);
}
};
var emp = ['abs','dsf','sdf','fd']
emp.remove("sdf")
console.log(emp)

根据数组对象内的属性值删除当前对象

var a = [{ name: "zain", age: 28 }, { name: "jack", age: 29 }, { name: "sank", age: 30 },{name:"solid",age:31}];

function test() {
    a.forEach(element => {
        if (element.name == "solid") {
            if (a.indexOf(element) > -1) {
                var i = a.indexOf(element);
                a.splice(i, 1);
            }
        }
    });
}
test();
console.log(a);