javascript实现des解密加密全过程


Posted in Javascript onApril 03, 2014
//Paul Tero, July 2001 
//http://www.tero.co.uk/des/ 
// 
//Optimised for performance with large blocks by Michael Hayworth, November 2001 
//http://www.netdealing.com 
// 
//THIS SOFTWARE IS PROVIDED "AS IS" AND 
//ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
//IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
//ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 
//FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
//DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
//OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
//HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
//LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
//OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
//SUCH DAMAGE. //des 
//this takes the key, the message, and whether to encrypt or decrypt 
function des (key, message, encrypt, mode, iv, padding) { 
//declaring this locally speeds things up a bit 
var spfunction1 = new Array (0x1010400,0,0x10000,0x1010404,0x1010004,0x10404,0x4,0x10000,0x400,0x1010400,0x1010404,0x400,0x1000404,0x1010004,0x1000000,0x4,0x404,0x1000400,0x1000400,0x10400,0x10400,0x1010000,0x1010000,0x1000404,0x10004,0x1000004,0x1000004,0x10004,0,0x404,0x10404,0x1000000,0x10000,0x1010404,0x4,0x1010000,0x1010400,0x1000000,0x1000000,0x400,0x1010004,0x10000,0x10400,0x1000004,0x400,0x4,0x1000404,0x10404,0x1010404,0x10004,0x1010000,0x1000404,0x1000004,0x404,0x10404,0x1010400,0x404,0x1000400,0x1000400,0,0x10004,0x10400,0,0x1010004); 
var spfunction2 = new Array (-0x7fef7fe0,-0x7fff8000,0x8000,0x108020,0x100000,0x20,-0x7fefffe0,-0x7fff7fe0,-0x7fffffe0,-0x7fef7fe0,-0x7fef8000,-0x80000000,-0x7fff8000,0x100000,0x20,-0x7fefffe0,0x108000,0x100020,-0x7fff7fe0,0,-0x80000000,0x8000,0x108020,-0x7ff00000,0x100020,-0x7fffffe0,0,0x108000,0x8020,-0x7fef8000,-0x7ff00000,0x8020,0,0x108020,-0x7fefffe0,0x100000,-0x7fff7fe0,-0x7ff00000,-0x7fef8000,0x8000,-0x7ff00000,-0x7fff8000,0x20,-0x7fef7fe0,0x108020,0x20,0x8000,-0x80000000,0x8020,-0x7fef8000,0x100000,-0x7fffffe0,0x100020,-0x7fff7fe0,-0x7fffffe0,0x100020,0x108000,0,-0x7fff8000,0x8020,-0x80000000,-0x7fefffe0,-0x7fef7fe0,0x108000); 
var spfunction3 = new Array (0x208,0x8020200,0,0x8020008,0x8000200,0,0x20208,0x8000200,0x20008,0x8000008,0x8000008,0x20000,0x8020208,0x20008,0x8020000,0x208,0x8000000,0x8,0x8020200,0x200,0x20200,0x8020000,0x8020008,0x20208,0x8000208,0x20200,0x20000,0x8000208,0x8,0x8020208,0x200,0x8000000,0x8020200,0x8000000,0x20008,0x208,0x20000,0x8020200,0x8000200,0,0x200,0x20008,0x8020208,0x8000200,0x8000008,0x200,0,0x8020008,0x8000208,0x20000,0x8000000,0x8020208,0x8,0x20208,0x20200,0x8000008,0x8020000,0x8000208,0x208,0x8020000,0x20208,0x8,0x8020008,0x20200); 
var spfunction4 = new Array (0x802001,0x2081,0x2081,0x80,0x802080,0x800081,0x800001,0x2001,0,0x802000,0x802000,0x802081,0x81,0,0x800080,0x800001,0x1,0x2000,0x800000,0x802001,0x80,0x800000,0x2001,0x2080,0x800081,0x1,0x2080,0x800080,0x2000,0x802080,0x802081,0x81,0x800080,0x800001,0x802000,0x802081,0x81,0,0,0x802000,0x2080,0x800080,0x800081,0x1,0x802001,0x2081,0x2081,0x80,0x802081,0x81,0x1,0x2000,0x800001,0x2001,0x802080,0x800081,0x2001,0x2080,0x800000,0x802001,0x80,0x800000,0x2000,0x802080); 
var spfunction5 = new Array (0x100,0x2080100,0x2080000,0x42000100,0x80000,0x100,0x40000000,0x2080000,0x40080100,0x80000,0x2000100,0x40080100,0x42000100,0x42080000,0x80100,0x40000000,0x2000000,0x40080000,0x40080000,0,0x40000100,0x42080100,0x42080100,0x2000100,0x42080000,0x40000100,0,0x42000000,0x2080100,0x2000000,0x42000000,0x80100,0x80000,0x42000100,0x100,0x2000000,0x40000000,0x2080000,0x42000100,0x40080100,0x2000100,0x40000000,0x42080000,0x2080100,0x40080100,0x100,0x2000000,0x42080000,0x42080100,0x80100,0x42000000,0x42080100,0x2080000,0,0x40080000,0x42000000,0x80100,0x2000100,0x40000100,0x80000,0,0x40080000,0x2080100,0x40000100); 
var spfunction6 = new Array (0x20000010,0x20400000,0x4000,0x20404010,0x20400000,0x10,0x20404010,0x400000,0x20004000,0x404010,0x400000,0x20000010,0x400010,0x20004000,0x20000000,0x4010,0,0x400010,0x20004010,0x4000,0x404000,0x20004010,0x10,0x20400010,0x20400010,0,0x404010,0x20404000,0x4010,0x404000,0x20404000,0x20000000,0x20004000,0x10,0x20400010,0x404000,0x20404010,0x400000,0x4010,0x20000010,0x400000,0x20004000,0x20000000,0x4010,0x20000010,0x20404010,0x404000,0x20400000,0x404010,0x20404000,0,0x20400010,0x10,0x4000,0x20400000,0x404010,0x4000,0x400010,0x20004010,0,0x20404000,0x20000000,0x400010,0x20004010); 
var spfunction7 = new Array (0x200000,0x4200002,0x4000802,0,0x800,0x4000802,0x200802,0x4200800,0x4200802,0x200000,0,0x4000002,0x2,0x4000000,0x4200002,0x802,0x4000800,0x200802,0x200002,0x4000800,0x4000002,0x4200000,0x4200800,0x200002,0x4200000,0x800,0x802,0x4200802,0x200800,0x2,0x4000000,0x200800,0x4000000,0x200800,0x200000,0x4000802,0x4000802,0x4200002,0x4200002,0x2,0x200002,0x4000000,0x4000800,0x200000,0x4200800,0x802,0x200802,0x4200800,0x802,0x4000002,0x4200802,0x4200000,0x200800,0,0x2,0x4200802,0,0x200802,0x4200000,0x800,0x4000002,0x4000800,0x800,0x200002); 
var spfunction8 = new Array (0x10001040,0x1000,0x40000,0x10041040,0x10000000,0x10001040,0x40,0x10000000,0x40040,0x10040000,0x10041040,0x41000,0x10041000,0x41040,0x1000,0x40,0x10040000,0x10000040,0x10001000,0x1040,0x41000,0x40040,0x10040040,0x10041000,0x1040,0,0,0x10040040,0x10000040,0x10001000,0x41040,0x40000,0x41040,0x40000,0x10041000,0x1000,0x40,0x10040040,0x1000,0x41040,0x10001000,0x40,0x10000040,0x10040000,0x10040040,0x10000000,0x40000,0x10001040,0,0x10041040,0x40040,0x10000040,0x10040000,0x10001000,0x10001040,0,0x10041040,0x41000,0x41000,0x1040,0x1040,0x40040,0x10000000,0x10041000); 
//create the 16 or 48 subkeys we will need 
var keys = des_createKeys (key); 
var m=0, i, j, temp, temp2, right1, right2, left, right, looping; 
var cbcleft, cbcleft2, cbcright, cbcright2 
var endloop, loopinc; 
var len = message.length; 
var chunk = 0; 
//set up the loops for single and triple des 
var iterations = keys.length == 32 ? 3 : 9; //single or triple des 
if (iterations == 3) {looping = encrypt ? new Array (0, 32, 2) : new Array (30, -2, -2);} 
else {looping = encrypt ? new Array (0, 32, 2, 62, 30, -2, 64, 96, 2) : new Array (94, 62, -2, 32, 64, 2, 30, -2, -2);} 
//pad the message depending on the padding parameter 
if (padding == 2) message += " "; //pad the message with spaces 
else if (padding == 1) {temp = 8-(len%8); message += String.fromCharCode (temp,temp,temp,temp,temp,temp,temp,temp); if (temp==8) len+=8;} //PKCS7 padding 
else if (!padding) message += "\0\0\0\0\0\0\0\0"; //pad the message out with null bytes 
//store the result here 
result = ""; 
tempresult = ""; 
if (mode == 1) { //CBC mode 
cbcleft = (iv.charCodeAt(m++) << 24) | (iv.charCodeAt(m++) << 16) | (iv.charCodeAt(m++) << 8) | iv.charCodeAt(m++); 
cbcright = (iv.charCodeAt(m++) << 24) | (iv.charCodeAt(m++) << 16) | (iv.charCodeAt(m++) << 8) | iv.charCodeAt(m++); 
m=0; 
} 
//loop through each 64 bit chunk of the message 
while (m < len) { 
left = (message.charCodeAt(m++) << 24) | (message.charCodeAt(m++) << 16) | (message.charCodeAt(m++) << 8) | message.charCodeAt(m++); 
right = (message.charCodeAt(m++) << 24) | (message.charCodeAt(m++) << 16) | (message.charCodeAt(m++) << 8) | message.charCodeAt(m++); 
//for Cipher Block Chaining mode, xor the message with the previous result 
if (mode == 1) {if (encrypt) {left ^= cbcleft; right ^= cbcright;} else {cbcleft2 = cbcleft; cbcright2 = cbcright; cbcleft = left; cbcright = right;}} 
//first each 64 but chunk of the message must be permuted according to IP 
temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4); 
temp = ((left >>> 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16); 
temp = ((right >>> 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2); 
temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8); 
temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1); 
left = ((left << 1) | (left >>> 31)); 
right = ((right << 1) | (right >>> 31)); 
//do this either 1 or 3 times for each chunk of the message 
for (j=0; j<iterations; j+=3) { 
endloop = looping[j+1]; 
loopinc = looping[j+2]; 
//now go through and perform the encryption or decryption 
for (i=looping[j]; i!=endloop; i+=loopinc) { //for efficiency 
right1 = right ^ keys[i]; 
right2 = ((right >>> 4) | (right << 28)) ^ keys[i+1]; 
//the result is attained by passing these bytes through the S selection functions 
temp = left; 
left = right; 
right = temp ^ (spfunction2[(right1 >>> 24) & 0x3f] | spfunction4[(right1 >>> 16) & 0x3f] 
| spfunction6[(right1 >>> 8) & 0x3f] | spfunction8[right1 & 0x3f] 
| spfunction1[(right2 >>> 24) & 0x3f] | spfunction3[(right2 >>> 16) & 0x3f] 
| spfunction5[(right2 >>> 8) & 0x3f] | spfunction7[right2 & 0x3f]); 
} 
temp = left; left = right; right = temp; //unreverse left and right 
} //for either 1 or 3 iterations 
//move then each one bit to the right 
left = ((left >>> 1) | (left << 31)); 
right = ((right >>> 1) | (right << 31)); 
//now perform IP-1, which is IP in the opposite direction 
temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1); 
temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8); 
temp = ((right >>> 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2); 
temp = ((left >>> 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16); 
temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4); 
//for Cipher Block Chaining mode, xor the message with the previous result 
if (mode == 1) {if (encrypt) {cbcleft = left; cbcright = right;} else {left ^= cbcleft2; right ^= cbcright2;}} 
tempresult += String.fromCharCode ((left>>>24), ((left>>>16) & 0xff), ((left>>>8) & 0xff), (left & 0xff), (right>>>24), ((right>>>16) & 0xff), ((right>>>8) & 0xff), (right & 0xff)); 
chunk += 8; 
if (chunk == 512) {result += tempresult; tempresult = ""; chunk = 0;} 
} //for every 8 characters, or 64 bits in the message 
//return the result as an array 
return result + tempresult; 
} //end of des 

//des_createKeys 
//this takes as input a 64 bit key (even though only 56 bits are used) 
//as an array of 2 integers, and returns 16 48 bit keys 
function des_createKeys (key) { 
//declaring this locally speeds things up a bit 
pc2bytes0 = new Array (0,0x4,0x20000000,0x20000004,0x10000,0x10004,0x20010000,0x20010004,0x200,0x204,0x20000200,0x20000204,0x10200,0x10204,0x20010200,0x20010204); 
pc2bytes1 = new Array (0,0x1,0x100000,0x100001,0x4000000,0x4000001,0x4100000,0x4100001,0x100,0x101,0x100100,0x100101,0x4000100,0x4000101,0x4100100,0x4100101); 
pc2bytes2 = new Array (0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808,0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808); 
pc2bytes3 = new Array (0,0x200000,0x8000000,0x8200000,0x2000,0x202000,0x8002000,0x8202000,0x20000,0x220000,0x8020000,0x8220000,0x22000,0x222000,0x8022000,0x8222000); 
pc2bytes4 = new Array (0,0x40000,0x10,0x40010,0,0x40000,0x10,0x40010,0x1000,0x41000,0x1010,0x41010,0x1000,0x41000,0x1010,0x41010); 
pc2bytes5 = new Array (0,0x400,0x20,0x420,0,0x400,0x20,0x420,0x2000000,0x2000400,0x2000020,0x2000420,0x2000000,0x2000400,0x2000020,0x2000420); 
pc2bytes6 = new Array (0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002,0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002); 
pc2bytes7 = new Array (0,0x10000,0x800,0x10800,0x20000000,0x20010000,0x20000800,0x20010800,0x20000,0x30000,0x20800,0x30800,0x20020000,0x20030000,0x20020800,0x20030800); 
pc2bytes8 = new Array (0,0x40000,0,0x40000,0x2,0x40002,0x2,0x40002,0x2000000,0x2040000,0x2000000,0x2040000,0x2000002,0x2040002,0x2000002,0x2040002); 
pc2bytes9 = new Array (0,0x10000000,0x8,0x10000008,0,0x10000000,0x8,0x10000008,0x400,0x10000400,0x408,0x10000408,0x400,0x10000400,0x408,0x10000408); 
pc2bytes10 = new Array (0,0x20,0,0x20,0x100000,0x100020,0x100000,0x100020,0x2000,0x2020,0x2000,0x2020,0x102000,0x102020,0x102000,0x102020); 
pc2bytes11 = new Array (0,0x1000000,0x200,0x1000200,0x200000,0x1200000,0x200200,0x1200200,0x4000000,0x5000000,0x4000200,0x5000200,0x4200000,0x5200000,0x4200200,0x5200200); 
pc2bytes12 = new Array (0,0x1000,0x8000000,0x8001000,0x80000,0x81000,0x8080000,0x8081000,0x10,0x1010,0x8000010,0x8001010,0x80010,0x81010,0x8080010,0x8081010); 
pc2bytes13 = new Array (0,0x4,0x100,0x104,0,0x4,0x100,0x104,0x1,0x5,0x101,0x105,0x1,0x5,0x101,0x105); 
//how many iterations (1 for des, 3 for triple des) 
var iterations = key.length > 8 ? 3 : 1; //changed by Paul 16/6/2007 to use Triple DES for 9+ byte keys 
//stores the return keys 
var keys = new Array (32 * iterations); 
//now define the left shifts which need to be done 
var shifts = new Array (0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0); 
//other variables 
var lefttemp, righttemp, m=0, n=0, temp; 
for (var j=0; j<iterations; j++) { //either 1 or 3 iterations 
left = (key.charCodeAt(m++) << 24) | (key.charCodeAt(m++) << 16) | (key.charCodeAt(m++) << 8) | key.charCodeAt(m++); 
right = (key.charCodeAt(m++) << 24) | (key.charCodeAt(m++) << 16) | (key.charCodeAt(m++) << 8) | key.charCodeAt(m++); 
temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4); 
temp = ((right >>> -16) ^ left) & 0x0000ffff; left ^= temp; right ^= (temp << -16); 
temp = ((left >>> 2) ^ right) & 0x33333333; right ^= temp; left ^= (temp << 2); 
temp = ((right >>> -16) ^ left) & 0x0000ffff; left ^= temp; right ^= (temp << -16); 
temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1); 
temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8); 
temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1); 
//the right side needs to be shifted and to get the last four bits of the left side 
temp = (left << 8) | ((right >>> 20) & 0x000000f0); 
//left needs to be put upside down 
left = (right << 24) | ((right << 8) & 0xff0000) | ((right >>> 8) & 0xff00) | ((right >>> 24) & 0xf0); 
right = temp; 
//now go through and perform these shifts on the left and right keys 
for (var i=0; i < shifts.length; i++) { 
//shift the keys either one or two bits to the left 
if (shifts[i]) {left = (left << 2) | (left >>> 26); right = (right << 2) | (right >>> 26);} 
else {left = (left << 1) | (left >>> 27); right = (right << 1) | (right >>> 27);} 
left &= -0xf; right &= -0xf; 
//now apply PC-2, in such a way that E is easier when encrypting or decrypting 
//this conversion will look like PC-2 except only the last 6 bits of each byte are used 
//rather than 48 consecutive bits and the order of lines will be according to 
//how the S selection functions will be applied: S2, S4, S6, S8, S1, S3, S5, S7 
lefttemp = pc2bytes0[left >>> 28] | pc2bytes1[(left >>> 24) & 0xf] 
| pc2bytes2[(left >>> 20) & 0xf] | pc2bytes3[(left >>> 16) & 0xf] 
| pc2bytes4[(left >>> 12) & 0xf] | pc2bytes5[(left >>> 8) & 0xf] 
| pc2bytes6[(left >>> 4) & 0xf]; 
righttemp = pc2bytes7[right >>> 28] | pc2bytes8[(right >>> 24) & 0xf] 
| pc2bytes9[(right >>> 20) & 0xf] | pc2bytes10[(right >>> 16) & 0xf] 
| pc2bytes11[(right >>> 12) & 0xf] | pc2bytes12[(right >>> 8) & 0xf] 
| pc2bytes13[(right >>> 4) & 0xf]; 
temp = ((righttemp >>> 16) ^ lefttemp) & 0x0000ffff; 
keys[n++] = lefttemp ^ temp; keys[n++] = righttemp ^ (temp << 16); 
} 
} //for each iterations 
//return the keys we've created 
return keys; 
} //end of des_createKeys 

////////////////////////////// TEST ////////////////////////////// 
function stringToHex (s) { 
var r = "0x"; 
var hexes = new Array ("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f"); 
for (var i=0; i<s.length; i++) {r += hexes [s.charCodeAt(i) >> 4] + hexes [s.charCodeAt(i) & 0xf];} 
return r; 
} 
function hexToString (h) { 
var r = ""; 
for (var i= (h.substr(0, 2)=="0x")?2:0; i<h.length; i+=2) {r += String.fromCharCode (parseInt (h.substr (i, 2), 16));} 
return r; 
} 
var key = "this is a 24 byte key !!"; 
var message = "This is a test message"; 
var ciphertext = des (key, message, 1, 0); 
document.writeln ("DES Test: " + stringToHex (ciphertext));
Javascript 相关文章推荐
javascript 进度条 实现代码
Jul 30 Javascript
js中的布尔运算符使用介绍
Nov 20 Javascript
jquery 合并内容相同的单元格(示例代码)
Dec 13 Javascript
JS 删除字符串最后一个字符的实现代码
Feb 20 Javascript
阿里大于短信验证码node koa2的实现代码(最新)
Sep 07 Javascript
浅谈vue自定义全局组件并通过全局方法 Vue.use() 使用该组件
Dec 07 Javascript
VS Code转换大小写、修改选中文字或代码颜色的方法
Dec 15 Javascript
微信小程序实现商品属性联动选择
Feb 15 Javascript
layer设置maxWidth及maxHeight解决方案
Jul 26 Javascript
async/await让异步操作同步执行的方法详解
Nov 01 Javascript
Javascript ParentNode和ChildNode接口原理解析
Mar 16 Javascript
js代码编写无缝轮播图
Sep 13 Javascript
无刷新预览所选择的图片示例代码
Apr 02 #Javascript
jQuery防止click双击多次提交及传递动态函数或多参数
Apr 02 #Javascript
jquery跟js初始化加载的多种方法及区别介绍
Apr 02 #Javascript
jquery中子元素和后代元素的区别示例介绍
Apr 02 #Javascript
js 日期比较相关天数代码
Apr 02 #Javascript
你未必知道的JavaScript和CSS交互的5种方法
Apr 02 #Javascript
网页广告中JS代码的信息监听示例
Apr 02 #Javascript
You might like
再说下636单管机
2021/03/02 无线电
laravel框架中视图的基本使用方法分析
2019/11/23 PHP
Avengerls vs KG BO3 第二场2.18
2021/03/10 DOTA
javascript document.compatMode兼容性
2010/02/23 Javascript
关于include标签导致js路径找不到的问题分析及解决
2013/07/09 Javascript
js字符串截取函数substr substring slice使用对比
2013/11/27 Javascript
js计算任意值之间随机数的方法
2015/01/16 Javascript
基于JavaScript短信验证码如何实现
2016/01/24 Javascript
基于JavaScript实现快速转换文本语言(繁体中文和简体中文)
2016/03/07 Javascript
javascript事件处理模型实例说明
2016/05/31 Javascript
原生JS查找元素的方法(推荐)
2016/11/22 Javascript
用jQuery实现可输入多选下拉组合框实例代码
2017/01/18 Javascript
详解利用 Vue.js 实现前后端分离的RBAC角色权限管理
2017/09/15 Javascript
vue微信分享 vue实现当前页面分享其他页面
2017/12/02 Javascript
微信小程序自定义轮播图
2018/11/04 Javascript
js实现搜索栏效果
2018/11/16 Javascript
微信小程序如何实现五星评价功能
2019/10/15 Javascript
微信小程序 this.triggerEvent()的具体使用
2019/12/10 Javascript
《javascript设计模式》学习笔记一:Javascript面向对象程序设计对象成员的定义分析
2020/04/07 Javascript
jQuery实现移动端图片上传预览组件的方法分析
2020/05/01 jQuery
VueCli生产环境打包部署跨域失败的解决
2020/11/13 Javascript
python写xml文件的操作实例
2014/10/05 Python
Python中splitlines()方法的使用简介
2015/05/20 Python
举例讲解Python中的死锁、可重入锁和互斥锁
2015/11/05 Python
插入排序_Python与PHP的实现版(推荐)
2017/05/11 Python
python检测主机的连通性并记录到文件的实例
2018/06/21 Python
Python3内置模块pprint让打印比print更美观详解
2019/06/02 Python
pandas如何处理缺失值
2019/07/31 Python
Python使用ElementTree美化XML格式的操作
2020/03/06 Python
python+selenium+chrome实现淘宝购物车秒杀自动结算
2021/01/07 Python
python pygame 愤怒的小鸟游戏示例代码
2021/02/25 Python
基于DOM+CSS3实现OrgChart组织结构图插件
2016/03/02 HTML / CSS
瑞典的玛丽小姐:Miss Mary of Sweden
2019/02/13 全球购物
Kiehl’s科颜氏西班牙官方网站:源自美国的植物护肤品牌
2020/02/22 全球购物
大学校庆邀请函
2014/01/11 职场文书
羽毛球社团活动总结
2014/06/27 职场文书