ui

web/statics/component/pear/module/tools.js

@@ -0,0 +1,40 @@
+layui.define(['jquery', 'element'],
+    function (exports) {
+
+        var $ = layui.jquery;
+        var tools = new function () {
+
+            /**
+             * @since 防抖算法 
+             * 
+             * @param fn 要执行的方法
+             * @param time 防抖时间参数
+             */
+            this.debounce = function (fn, time) {
+                var timer = null
+                return function () {
+                    var arguments = arguments[0]
+                    if (timer) {
+                        clearTimeout(timer)
+                    }
+                    timer = setTimeout(function () {
+                        fn(arguments)
+                    }, time)
+                }
+            }
+
+            // image 转 base64
+            this.imageToBase64 = function (img) {
+                var canvas = document.createElement("canvas");
+                canvas.width = img.width;
+                canvas.height = img.height;
+                var ctx = canvas.getContext("2d");
+                ctx.drawImage(img, 0, 0, img.width, img.height);
+                var ext = img.src.substring(img.src.lastIndexOf(".") + 1).toLowerCase();
+                var dataURL = canvas.toDataURL("image/" + ext);
+                return dataURL;
+            }
+        };
+
+        exports('tools', tools);
+    })