我需要为我的一个项目生成一个随机的MAC地址,我不能让它工作.以下是我当前的代码(不工作).
function genMAC(){ // Make a new array with all available HEX options. var colours = new Array("0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F"); // Make variable to hold 6 character HEX array partA = new Array(1); partB = new Array(1); partC = new Array(1); partD = new Array(1); partE = new Array(1); partF = new Array(1); mac-address=""; for (i=0;i<2;i++){ // Loop for partA partA[i]=colours[Math.round(Math.random()*14)]; } for (i=0;i<2;i++){ // Loop through 6 times,randomising the letter added to the array partB[i]=colours[Math.round(Math.random()*14)]; } for (i=0;i<2;i++){ // Loop through 6 times,randomising the letter added to the array partC[i]=colours[Math.round(Math.random()*14)]; } for (i=0;i<2;i++){ // Loop through 6 times,randomising the letter added to the array partD[i]=colours[Math.round(Math.random()*14)]; } for (i=0;i<2;i++){ // Loop through 6 times,randomising the letter added to the array partE[i]=colours[Math.round(Math.random()*14)]; } for (i=0;i<2;i++){ // Loop through 6 times,randomising the letter added to the array partF[i]=colours[Math.round(Math.random()*14)]; } // Returns like "a10bc5". It is likely that you may need to add a "#". mac-address = partA + ":" + partB + ":" + partC + ":" + partD + ":" + partE + ":" + partF; return mac-address;
}
丑陋.我对JS很新,我想知道是否有更简单的方法来做到这一点.
解决方法
这是一个更多的“干净”版本的代码,这将循环次数减少到一个.在循环的每次迭代中,它将两个随机字符附加到macAddress变量,如果不是最后一次迭代,它也会附加一个冒号.然后它返回生成的地址.
function genMAC(){ var hexDigits = "0123456789ABCDEF"; var macAddress = ""; for (var i = 0; i < 6; i++) { macAddress+=hexDigits.charat(Math.round(Math.random() * 15)); macAddress+=hexDigits.charat(Math.round(Math.random() * 15)); if (i != 5) macAddress += ":"; } return macAddress; }
除了比必要的更复杂,你的代码有两个问题.第一个是由于破折号,mac-address是一个无效的变量名.这导致代码根本不起作用.有了这个修复,另一个问题是在最后设置MAC地址变量时,将数组附加到字符串.这导致每个包含两个十六进制数字的数组被转换成一个字符串,这意味着一个逗号被放在两位数之间.
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