js高效去除數(shù)組重復(fù)元素示例代碼_javascript技巧
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責(zé)編：小采
時間：2020-11-27 21:17:31
js高效去除數(shù)組重復(fù)元素示例代碼_javascript技巧
js高效去除數(shù)組重復(fù)元素示例代碼_javascript技巧: 代碼如下: function unique(data){ data = data []; var a = {}; for (var i=0; ivar v = data[i]; if (typeof(a[v]) == 'undefined'){ a[v] = 1; } }; data.length=0; for (var i in a){ dat
導(dǎo)讀js高效去除數(shù)組重復(fù)元素示例代碼_javascript技巧: 代碼如下: function unique(data){ data = data []; var a = {}; for (var i=0; ivar v = data[i]; if (typeof(a[v]) == 'undefined'){ a[v] = 1; } }; data.length=0; for (var i in a){ dat
代碼如下:
function unique(data){
data = data || [];
var a = {};
for (var i=0; i
var v = data[i];
if (typeof(a[v]) == 'undefined'){
a[v] = 1;
}
};
data.length=0;
for (var i in a){
data[data.length] = i;
}
return data;
} function test(){
var arr = [9,1,3,8,7,7,6,6,5,7,8,8,7,4,3,1];
var arr1 = unique(arr);
alert(arr1.join(","));
}
test();
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js高效去除數(shù)組重復(fù)元素示例代碼_javascript技巧
js高效去除數(shù)組重復(fù)元素示例代碼_javascript技巧: 代碼如下: function unique(data){ data = data []; var a = {}; for (var i=0; ivar v = data[i]; if (typeof(a[v]) == 'undefined'){ a[v] = 1; } }; data.length=0; for (var i in a){ dat
