添加网站文件

public/static/common/js/function.js

@@ -0,0 +1,118 @@
+function getImageWidth(url, callback) {
+    var img = new Image();
+    img.src = url;
+    if (img.complete) {
+        callback(img.width, img.height);
+    } else {
+        img.onload = function () {
+            callback(img.width, img.height);
+        }
+    }
+}
+function in_array(search,array){
+    for(var i in array){
+        if(array[i]==search){
+            return true;
+        }
+    }
+    return false;
+}
+function uniq(array){
+    var temp = [];
+    for(var i = 0; i < array.length; i++){
+        if(temp.indexOf(array[i]) == -1){
+            temp.push(array[i]);
+        }
+    }
+    return temp;
+}
+//判断字符串是否为空格
+function isEmptyString(str) {
+    str = str.replace(/(^\s*)|(\s*$)/g, "");
+    if (str.length == 0) {
+        return true;
+    }
+    return false;
+}
+//数组去重
+function unique(arr){
+    var hash=[];
+    for (var i = 0; i < arr.length; i++) {
+        if(hash.indexOf(arr[i])==-1){
+            hash.push(arr[i]);
+        }
+    }
+    return hash;
+}
+
+//元素交换
+function swop(first, second) {
+    html = first.html();
+    first.html(second.html());
+    second.html(html);
+}
+//笛卡尔积生成
+function cartesianProduct(arr) {
+    if (arr.length < 2) return arr[0] || [];
+    return [].reduce.call(arr, function (col, set) {
+        let res = [];
+        col.forEach(c => {
+            set.forEach(s => {
+                let t = [].concat(Array.isArray(c) ? c : [c]);
+                t.push(s);
+                res.push(t);
+            })
+        });
+        return res;
+    });
+}
+
+
+//元素交换
+function swop(first, second) {
+    html = first.html();
+    first.html(second.html());
+    second.html(html);
+}
+//数组去重
+function unique(arr){
+    var hash=[];
+    for (var i = 0; i < arr.length; i++) {
+        if(hash.indexOf(arr[i])==-1){
+            hash.push(arr[i]);
+        }
+    }
+    return hash;
+}
+
+
+//转换数组格式
+function array_column(data,key) {
+    var result = [];
+    for(var i in data){
+        result[data[i][key]] = data[i];
+    }
+    return result;
+}
+
+function array_unique(arr){
+    for(var i=0; i<arr.length; i++){
+        for(var j=i+1; j<arr.length; j++){
+            if(arr[i]==arr[j]){
+                arr.splice(j,1);
+                j--;
+            }
+        }
+    }
+    return arr;
+}
+
+/**
+ * 判断是否为整数
+ * @param obj
+ * @returns {boolean}
+ */
+function isInteger(obj) {
+    return obj % 1 === 0
+}
+