This time I will bring you jQueryWhether there is a specified value in the array and determine whether there is a specified value in the jQuery arrayWhat are the precautions, as follows This is a practical case, let’s take a look at it.
<!DOCTYPE>
<html>
<head>
<title>jquery判断值是否存在于数组中</title>
<meta charset="utf-8">
</head>
<body>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script>
//参数第一个为数组，第二个为需要判断是否存在于数组中的值
function isInArray(arr,val){
var str = ","+arr.join(",")+",";
if(str.indexOf(","+val+",") != "-1"){
//该数存在于数组中
arr.splice($.inArray(val,arr),1); //把该数从数组中删除
console.log(arr);
}else{
//该数不存在于数组中
console.log("不存在");
}
}
var arr = [1,28,60,80,6];
isInArray(arr,28);//存在，删除元素28
isInArray(arr,18);//不存在，提示“不存在”
</script>
</body>
</html>Run results:
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