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使用crypto生成随机数

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This commit is contained in:
zhl 2019-05-09 13:55:30 +08:00
parent 23cee74ef9
commit 526b96ed78
2 changed files with 8 additions and 1 deletions
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1
package.json
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@ -16,6 +16,7 @@
"license": "ISC", "license": "ISC",
"dependencies": { "dependencies": {
"async": "^2.6.2", "async": "^2.6.2",
"biguint-format": "^1.0.1",
"bluebird": "^3.5.3", "bluebird": "^3.5.3",
"bunyan": "^1.8.12", "bunyan": "^1.8.12",
"cheerio": "^1.0.0-rc.3", "cheerio": "^1.0.0-rc.3",

8
src/utils/string.util.js
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@ -1,3 +1,5 @@
import crypto from "crypto";
import format from 'biguint-format';
export default { export default {
/** /**
@ -35,8 +37,12 @@ export default {
} }
return result; return result;
}, },
// randomNum(minNum, maxNum) {
// return parseInt(Math.random()*(maxNum-minNum+1)+minNum, 10);
// },
randomNum(minNum, maxNum) { randomNum(minNum, maxNum) {
return parseInt(Math.random()*(maxNum-minNum+1)+minNum, 10); let x = format(crypto.randomBytes(4), 'dec');
return parseInt(x / Math.pow(2, 4 * 8) * (maxNum + 1 - minNum) + minNum);
}, },
getContentByReg(str, reg) { getContentByReg(str, reg) {
const contents = str.match(reg); const contents = str.match(reg);