JS --- reverse traversal achieved Array array, the array is connected string

// =================== 求最大值=====================================
<script>
　　var arr = [10,35,765,21345,678,89];
　　var max = arr [0];
　　for (var i=0;i< arr.length;i++) {
　　　　if (max<arr[i]){
　　　　　　max = arr [i];
　　　　}
　　}
　　console.log("最大值:" + max);
</script>
// =================== 求最小值=====================================
<script>
　　var arr = [10,35,765,21345,678,89];
　　var max = arr [0];
　　for (var i=0;i< arr.length;i++) {
　　　　if (max>arr[i]){
　　　　　　max = arr [i];
　　　　}
　　}
　　console.log("最小值:" + max);
</script>
// iterate reverse ============================ ================= ==============
<Script>
　　var ARR = [1,2,3,4,5,6,7,8,9];
　　for (var. 1-I = arr.length ; I> = 0; I -) {
　　　　the console.log (ARR [I]);
　　}
</ Script>
// string concatenation array =========== ======= ==== the first method (adding back from the front) =========
<Script>
　　var names = [ "Jay", "Jet", "JJ", "Angela", "Hebe" ];
　　var STR = "";
　　　　for (var I = 0; I <-of names.length. 1; I ++) {
　　　　　　STR + = names [I] + "|"
　　　　}
　　　　the console.log (STR + names [of names.length. 1- ]);
</ Script>
// =========== =========== second array string concatenation method (plus forward from the rear) ==== ================
<Script>
　　var names = [ "Jay", "Jet","JJ", "Angela", "Hebe"];
　　var STR = "";
　　for (var i = 1; i< names.length;i++){
　　　　str += "|" + names[i]
　　}
　　console.log(names[0]+ str);
</script>
 

============== // remove duplicate array 0, the other data in an array ============
<Script>
　　var = ARR [10,20,0,12,0,0,124,32];
　　var newArr = [];
　　for (var I = 0; I <arr.length; I ++) {
　　　　IF (! ARR [I] = 0) {
　　　　newArr [newArr.length] = ARR [I];
　　　　}
　　}
　　the console.log (newArr);
</ Script>
// inverted array ===================== ---------- position in the array of the data exchange =============
<Script>
　　var = array [10,20,30,40,50,60];
　　for (var I = 0; I <= be array.length / 2; I ++) {
　　　　var Array TEMP = [I];
　　　　Array [I] = Array [-be array.length. 1-I];
　　　　Array [. 1-be array.length -i] = TEMP;
　　}
　　the console.log (Array);
</ Script>
// =========== series seeking scores, the total score, average, maximum and minimum ====== // =========

<Script>
　　var = proInput the parseInt (prompt ( "Please enter the number of the class count RESEARCH 17"));
　　var proScore = [];
　　for (var I = 0; I <proInput; I ++) {
　　　　proScore [proScore.length] = parseInt (prompt ( "Please enter" + (i + 1) + " th student grades"));
　　}
　　the console.log (proScore);
　　var SUM = 0;
　　var AVER = 0;
　　var proScore = max [0] ;
　　var proScore = min [0];
　　for (var I = 0; I <proScore.length; I ++) {
　　　　SUM = proScore + [I];
　　　　AVER = SUM / proScore.length;
　　　　IF (max <proScore [I]) {
　　　　　　max = proScore [I];
　　　　}
　　　　IF (min> proScore [I]) {
　　　　　　min = proScore [I];
　　　　}
　　}
　　the console.log ( "class total score:" SUM +);
　　Console.log ( "average:" + aver);
　　console.log ( "maximum value:" + max);
　　console.log ( "Min:" + min);
</ Script>