How to remove duplicate data from an array in jquery

How to deduplicate data in an array in jquery: First use a loop to traverse the array, write it into a new array, and use the [$.inArray()] method to determine whether the new array already exists before writing. There is this data; then if it is not written again, the new array obtained by this method will remove the duplicate data.

The operating environment of this tutorial: Windows 7 system, jquery version 3.2.1. This method is suitable for all brands of computers.

How to remove duplicate data from arrays in jquery:

Use a loop to traverse the array in jquery, write it into a new array, and use it before writing $.inArray()The method determines whether the data already exists in the new array. If it is not written again, the new array obtained by this method will remove duplicate data.

$.inArray()The function is used to find the specified value in the array and return its index value (if not found, return -1)

for(var i=0;i<arr.length;i++) {
　　var items=arr[i];
　　//判断元素是否存在于new_arr中，如果不存在则插入到new_arr的最后
　　if($.inArray(items,new_arr)==-1) {
　　　　new_arr.push(items);
　　}
}

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