Question

我有一个像这样的数组。

var myArray = ["1", "2", "3", "4", "5"];

当我点击下一个时，我需要找到下一个元素。假设我在变量中输入了2，当我点击＆＃34; next＆＃34;按钮，我需要检查数组并获得3等等。

Answer 1

<强> jQuery的：

您应该使用.inArray()和模数运算符：

var myArray = ["1", "2", "3", "4", "5"];
var val = "2";
var next = myArray[($.inArray(val, myArray) + 1) % myArray.length];

<强> DEMO

<强> JavaScript的：

var myArray = ["1", "2", "3", "4", "5"];
var val = "2";
var index = myArray.indexOf(val);
if(index >= 0 && index < myArray.length - 1){
   var next = myArray[index + 1];
   alert(next);
}

<强> DEMO

Answer 2

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>

<input type="button" value="next" id="next">

<script>
    var globle = 0; // by default first page
    var myArray = ["1", "2", "3", "4", "5"];
    $(document).ready(function(){
        $("#next").click(function(){
            if(globle == myArray.length){
                 globle = 0;
            }

            alert(myArray[globle]);
            globle++;
        });
    });
</script>

Answer 3

试试这个：

var myArray = ["1", "2", "3", "4", "5"];
var val = "2";
function checknext() {
       var next = $.inArray(val, myArray) + 1;
       if (next < myArray.length) {
            val = myArray[next];
            alert(val);
       }
       else {
           alert("No More Item Exist");
       }
  }

  function checkprv() {                
       var prv = $.inArray(val, myArray) - 1;
         if (prv >= 0) {
           val = myArray[prv];
           alert(val);
         }
         else {
           alert("No More Item Exist");
         }

Working Example

使用jquery查找数组的下一个元素

3 个答案: