[英]Javascript loop through collection of objects
var squares = [1, 2, 4, 8];
var cubes = [1, 4, 9, 16];
var north,east,south,west;
north = getClass(squares[0], cubes[0]);
east = getClass(squares[1], cubes[1]);
south = getClass(squares[2], cubes[2]);
west = getClass(squares[3], cubes[3]);
$('.' + north).doStuff()
$('.' + east).doStuff()
$('.' + south).doStuff()
$('.' + west).doStuff()
我正在用javascript寫一些代碼,感覺我應該能夠重構本節,但是我不知道該怎么做。
我想我想做的是使北,東,南,西成為某種集合,以便我可以遍歷它嗎?
您如何建議我使用javascript?
你可以做這樣的事情:
var squares = [1, 2, 4, 8];
var cubes = [1, 4, 9, 16];
var selectors = [];
for(var c = 0, c < squares.length, c++){
selectors.push(getClass(squares[c], cubes[c]));
}
$('.' + selectors.join(', .')).doStuff()
或者,您可以使用.map
:
var squares = [1, 2, 4, 8];
var cubes = [1, 4, 9, 16];
var selectors = $.map(squares, function(_, i){
return getClass(squares[i], cubes[i]);
})
$('.' + selectors.join(', .')).doStuff()
嘗試這種方式:
var squares = [1, 2, 4, 8];
var cubes = [1, 4, 9, 16];
for(var i=0; i< squares.length; i++)
{
$('.' + getClass(squares[i], cubes[i])).doStuff();
}
像這樣:
var squares = [1, 2, 4, 8];
var cubes = [1, 4, 9, 16];
var direction=[]
for (i=0;i<cubes.length;i++){
a.push(getClass(squares[i], cubes[i]));
}
$(a).each(function (index) {
$('.' + this).doStuff();
});
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