如何对数组进行排序，以便在 position 中获得特定值？

Question

If I have an array of:

var myArray = ["one", "two", "yay", "something", "something else", "some more"];

And want to rearange the array so that the value "yay" is at position 0

var positionOneValue = "yay";
var sortedArray = myArray ... 

My attempt:

var sorted = myArray.sort((item) => {
    if(positionOneValue.match(item))
       return item;
     
    return null; // this is probably wrong
})

how do i accomplish this?

Answer 1

You could check for the value and move the value to top with the delta of the checks.

 var array = ["one", "two", "yay", "something", "something else", "some more"]; array.sort((a, b) => (b === 'yay') - (a === 'yay')); console.log(array);

Answer 2

If the idea is to keep everything else in the same order, you can use indexOf , splice and unshift :

 var myArray = ["one", "two", "yay", "something", "c", "b", "a", "something else", "some more"]; var yayIndex = myArray.indexOf("yay"); if (yayIndex > -1) { myArray.unshift(myArray.splice(yayIndex, 1)[0]); } console.log(myArray);