可以有人告诉我为什么循环没有停止后5进入？
http://jsbin.com/ucuqot/edit#preview
http://jsbin.com/ucuqot/edit#preview
- $(document).ready(function()
- {
- someArray = new Array();
- someArray[0] = 't5';
- someArray[1] = 'z12';
- someArray[2] = 'b88';
- someArray[3] = 's55';
- someArray[4] = 'e51';
- someArray[5] = 'o322';
- someArray[6] = 'i22';
- someArray[7] = 'k954';
- var test = findXX('o322');
- });
- function findXX(word)
- {
- $.each(someArray,function(i)
- {
- $('body').append('-> '+i+'<br />');
- if(someArray[i] == 'someArray')
- {
- return someArray[i]; //<--- did not stop the loop!
- }
- });
- }
提前致谢！
解决方法
因为当你在每个循环中使用return语句时，一个“非假”值将作为一个continue，wheras false将作为一个break。您将需要从每个函数返回false。这样的东西：
- function findXX(word) {
- var toReturn;
- $.each(someArray,function(i) {
- $('body').append('-> '+i+'<br />');
- if(someArray[i] == word) {
- toReturn = someArray[i];
- return false;
- }
- });
- return toReturn;
- }
从docs：
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.
