删除json下指定的元素
var obj = {‘id':1, ‘name':2};
delete obj.id;
delete obj[id];
console.log(obj); // {‘name':2}
删除数组中指定元素
var objArray = [‘1','2','3','4'];
objArray.remove(‘1');
console.log(objArray); // [‘2','3','4']
/*定义js数组删除元素/
Array.prototype.remove = function(val) {
var index = this.indexOf(val);
if (index > -1) {
this.splice(index, 1);
}
};
jquery判断数组中是否含有某个元素
$.inArray(‘1',objArray) //返回‘1'的索引，如果不存在则返回-1
js数组删除元素、json删除元素
//数组var b=[1,2,3,4];
b.splice(b.indexOf(2,1)) //1,3,4
//json
var arrayId=[{"id":233,"name":"英语"},{"id":122,"name":"语文"},{"id":10,"name":"数学"}]
for(var i=0;i<arrayId.length;i++){
if (arrayId[i].id == item.id){//item.id==122
arrayId.splice(i,1) } } //{"id":233,"name":"英语"},{"id":10,"name":"数学"}