如果javascript中存在重复，则从数组中删除所有重复和原始元素

Question

var techologylist=[1,2,2,3,4,4,5]
var newtechologylist=[];
$.each(techologylist, function (i, el) {
   if ($.inArray(el, newtechologylist) === -1) newtechologylist.push(el);
});
console.log(newtechologylist)

我想从techologylist中删除值，如果相同的2值。在我的示例2和4来两次，因此我想从数组中删除2和4 我希望结果为[1,3,5]

但我的代码的结果当然会将结果显示为[1,2,3,4,5]

如果发生重复，如何更改我的脚本以删除这两个值

Answer 1

var techologylist = [1, 2, 2, 3, 4, 4, 5]
var newtechologylist = [];

$.each(techologylist , function (i, el) {
    
    if ($.inArray(el, newtechologylist ) === -1) {
        newtechologylist.push(el);
    } 
    
    else {
        var index = newtechologylist.indexOf(el);
        if(index > -1){
           newtechologylist.splice(index, 1);
        }
    }
});

document.write(newtechologylist);

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