From 000a70a4a16a9726c86f6c595e41c817798788a6 Mon Sep 17 00:00:00 2001
From: YangJ0605 <1442122744@qq.com>
Date: Fri, 12 Jun 2020 16:58:19 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=9E=E7=8E=B0=E4=B8=80=E4=BA=9B=E6=95=B0?=
 =?UTF-8?q?=E7=BB=84=E7=9A=84=E6=96=B9=E6=B3=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...60\347\273\204\345\216\273\351\207\215.js" |  2 +-
 .../index.html"                               |  1 +
 ...71\346\263\225\345\256\236\347\216\260.js" | 64 ++++++++++++++++++-
 3 files changed, 64 insertions(+), 3 deletions(-)

diff --git "a/\344\270\223\351\242\230\347\263\273\345\210\227/\346\225\260\347\273\204\345\216\273\351\207\215.js" "b/\344\270\223\351\242\230\347\263\273\345\210\227/\346\225\260\347\273\204\345\216\273\351\207\215.js"
index 1b37857..4718fb2 100644
--- "a/\344\270\223\351\242\230\347\263\273\345\210\227/\346\225\260\347\273\204\345\216\273\351\207\215.js"
+++ "b/\344\270\223\351\242\230\347\263\273\345\210\227/\346\225\260\347\273\204\345\216\273\351\207\215.js"
@@ -64,4 +64,4 @@ function unique(array) {
 
 //es6最简单
 
-let unique = (a) => [...new Set(a)]
\ No newline at end of file
+let unique = (a) => [...new Set(a)]
diff --git "a/\345\244\232\346\226\207\344\273\266\344\270\212\344\274\240\346\265\213\350\257\225/index.html" "b/\345\244\232\346\226\207\344\273\266\344\270\212\344\274\240\346\265\213\350\257\225/index.html"
index e8c9667..035c922 100644
--- "a/\345\244\232\346\226\207\344\273\266\344\270\212\344\274\240\346\265\213\350\257\225/index.html"
+++ "b/\345\244\232\346\226\207\344\273\266\344\270\212\344\274\240\346\265\213\350\257\225/index.html"
@@ -12,6 +12,7 @@
     var chunkSize=2*1024*1024
     var file = document.getElementById('file'), btn = document.getElementById('btn')
     var formData = new FormData()
+    var chunks=[]
     btn.addEventListener('click', () => {
      var fileItem = file.files[0]
      var blob = fileItem.slice(0, chunkSize) 
diff --git "a/\346\225\260\347\273\204\344\270\200\344\272\233\345\270\270\347\224\250\347\232\204\346\226\271\346\263\225\345\256\236\347\216\260.js" "b/\346\225\260\347\273\204\344\270\200\344\272\233\345\270\270\347\224\250\347\232\204\346\226\271\346\263\225\345\256\236\347\216\260.js"
index e807c83..4b66e2d 100644
--- "a/\346\225\260\347\273\204\344\270\200\344\272\233\345\270\270\347\224\250\347\232\204\346\226\271\346\263\225\345\256\236\347\216\260.js"
+++ "b/\346\225\260\347\273\204\344\270\200\344\272\233\345\270\270\347\224\250\347\232\204\346\226\271\346\263\225\345\256\236\347\216\260.js"
@@ -1,4 +1,14 @@
-Array.prototype.push = function() {
+Array.prototype.forEach = function (cb, context = undefined) {
+  let arr = this.slice()
+  let len = arr.length
+  for (let i = 0; i < len; i++) {
+    if (i in arr) {
+      cb.call(context, arr[i], i, arr)
+    }
+  }
+}
+
+Array.prototype.push = function () {
   for(let i = 0; i< arguments.length; i++) {
     this[this.length] = arguments[i]
   }
@@ -25,4 +35,54 @@ Array.prototype.shift = function() {
   return value
 }
 
-Array.prototype.unshift = 
\ No newline at end of file
+Array.prototype.map = function (cb, context = undefined) {
+  let arr = this.slice()
+  let len = arr.length
+  let res = []
+  for (let i = 0; i < len; i++) {
+    res[i] = cb.call(context, arr[i], i, arr)
+  }
+  return res
+}
+
+
+Array.prototype.myReduce = function (cb, initData) {
+  let arr = this, len = arr.length
+  let res = initData || arr[0]
+  let startIndex = initData ? 0 : 1
+  for (let i = startIndex; i < len; i++) {
+    res = cb(res, arr[i], i, arr)
+  }
+  return res
+}
+
+Array.prototype.mapByReduce = function (cb, context = null) {
+  return arr.reduce((pre, curr, index, arr) => {
+    let res = cb.call(context, curr, index, arr)
+    return [...pre, res]
+  },[])
+}
+
+Array.prototype.filter = function (cb, context=undefined) {
+  let arr = this.slice()
+  let len = arr.length
+  let res = [], newIndex=0
+  for (let i = 0; i < len; i++) {
+    let flag = cb.call(context, arr[i], i, arr)
+    if (flag) {
+      console.log(i, flag)
+      res[newIndex++] = arr[i] 
+    }
+  }
+  return res
+}
+
+
+Array.prototype.find = function (cb, context) {
+  let arr = this.slice()
+  let len = arr.length
+  for (let i = 0; i < len; i++) {
+    let res = cb.call(context, arr[i], i, arr)
+    if(res) return arr[i]
+  }
+}
\ No newline at end of file