Question

当条件满足时，如何在每个方法中突破以下jquery;

var rainbow = {'first' : 'red', 'second' : 'orange', 'third' : 'yellow'};

$.each(rainbow, function (key, color) {

  if (color == 'red') {

    //do something and then break out of the each method
    alert("i'm read, now break.");

  }

});

Answer 1

We can break the $.each() loop at a particular iteration by making the callback function return false. Returning non-false is the same as a continue statement in a for loop; it will skip immediately to the next iteration.

Answer 2

var rainbow = {'first' : 'red', 'second' : 'orange', 'third' : 'yellow'};

$.each(rainbow, function (key, color) {

  if (color == 'red') {

    //do something and then break out of the each method
    alert("i'm read, now break.");

    return false;

  }

});

Answer 3

明确写在jQuery的$.each页面上：

我们可以在a处打破$ .each（）循环通过制作特定的迭代回调函数返回false。返回非假是与a相同在for循环中继续声明;它将立即跳到下一个迭代。

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Answer 4

JQuery documentation for each州：

我们可以通过使回调函数返回false来在特定迭代中中断$ .each（）循环。返回非false与for循环中的continue语句相同;它将立即跳到下一次迭代。

它还提供了示例。

Answer 5

<script>
    var arr = [ "one", "two", "three", "four", "five" ];

    jQuery.each(arr, function() {
      $("#" + this).text("Mine is " + this + ".");
       return (this != "three"); // will stop running after "three"
   });


</script>

试试这个

http://api.jquery.com/jQuery.each/

Answer 6

我们不能在jquery函数中使用Break and Continue 试试这个

var rainbow = {'first' : 'red', 'second' : 'orange', 'third' : 'yellow'};

$.each(rainbow, function (key, color) {

  if (color == 'red') {
    //do something and then break out of the each method
    alert("i'm read, now break.");
    return false;
  }
  alert(color);
});

如何在jquery中突破$ .each？

6 个答案: