如何在JavaScript中对数组进行排序

Question

我没有使用关联数组。我正在使用像这样的1d数组，

array("1,a","5,b","2,c","8,d","6,f"); 

我该如何排序这个数组？

结果应该是，

array("1,a","2,c","5,b","6,f","8,d"); 

Answer 1

我要继续前进，假设你想通过数字部分首先进行排序，排序数字，然后有一个次要的词素文字（字符串）排序上逗号后的位。这样一个像“11，a”这样的值将会在“2，a”之后结束 - 如果你只是默认排序“11，a”将会在“2，a”之前结束。所以：

var a = ["1,a","11,a","8,a","24,z","5,b","2,c","8,d","6,f"]; 

a.sort(function(a,b) { 
    var aparts = a.split(","), 
     bparts = b.split(","), 
     anum = +aparts[0], // convert first part to number 
     bnum = +bparts[0], 
     aletter = aparts[1], 
     bletter = bparts[1]; 

    if (anum === bnum) 
     return aletter < bletter ? -1 : aletter === bletter ? 0 : -1; 
    else 
     return anum - bnum; 
}); 

结果：

["1,a", "2,c", "5,b", "6,f", "8,a", "8,d", "11,a", "24,z"] 

Answer 2

使用array.sort()内置JS功能。文档浏览：http://www.w3schools.com/jsref/jsref_sort.asp

Answer 3

http://jsfiddle.net/Dht33/

var arrayVar = ["1,a","2,c","5,b","6,f","8,d"]; 

arrayVar.sort() 

arrayVar; // "1,a","2,c","5,b","6,f","8,d" 

Answer 4

尝试：你怎么想（字典序）

function sortNumber(a,b) 
{ 
return (a.split(","))[0] - (b.split(","))[0] ; 
} 

var n = ["1,a","5,b","2,c","8,d","6,f"]; 
alert(n.sort(sortNumber)); 

Answer 5

sort()没有自定义排序功能排序。

>>> ["1,a","5,b","2,c","8,d","6,f"].sort(); 
["1,a", "2,c", "5,b", "6,f", "8,d"] 

请注意，这将对原始数组进行排序。您可以使用slice()进行浅拷贝。

如果您的数字比9大，要通过数的顺序进行排序，你会需要一个自定义排序功能。

["1,a","5,b","2,c","8,d","6,f"].sort(function(a, b) { 
    return parseInt(a, 10) - parseInt(b, 10); 
}); 

Answer 6

这是我做的：

var arr1 = new Array("1,a","5,b","2,c","8,d","6,f"); 
var arr2 = arr1.sort(function(a, b){ 
    var ax = a.split(","); 
    var bx = b.split(","); 
    return ax[0]-bx[0]; 
}); 

document.getElementById("result").innerHTML = arr2.join(" : "); 

Answer 7

你需要编写自己的比较函数来比较数字，否则默认sort()会把类似"40,a""5,b"之前。

下面是刚刚拆分对,字符并假定值之前，它是数值的例子。我在示例中添加了"40,a"以表明它正确地命令数字> 9。

function mySort(a,b) 
{ 
    return a.split(",", 1) - b.split(",", 1); 
} 

var theArray = ["1,a", "5,b", "2,c", "40,a", "8,d", "6,f"]; 
theArray.sort(mySort); // "1,a","2,c","5,b","6,f","8,d","40,a" 

Answer 8

试试这个：

<script type="text/javascript"> 
var testArray = new Array(); 
testArray[0] = '1'; 
testArray[1] = '5'; 
testArray[2] = '9'; 
testArray[3] = '8'; 
testArray[4] = '6'; 
testArray[5] = '2'; 
var getlength = testArray.length; 
testArray.sort(function(a,b){return a - b}); 
for(var i=0; i<getlength;i++) {   
    alert(testArray[i]); 
} 
</script> 

Answer 9

尝试是你[`的.sort（）`]（https://developer.mozilla.org具有这种

<script> 
var abc=new Array("1,a","5,b","2,c","8,d","6,f"); 
document.write("<br/>"); 
document.write(abc.sort()); 
</script>