ctx.font = randomNum(this.options.height / 2, this.options.height) + 'px SimHei' // 随机生成字体大小
ctx.fillStyle = randomColor(50, 160) // 随机生成字体颜色
ctx.shadowOffsetX = randomNum(-3, 3)
ctx.shadowOffsetY = randomNum(-3, 3)
ctx.shadowBlur = randomNum(-3, 3)
ctx.shadowColor = 'rgba(0, 0, 0, 0.3)'
var x = this.options.width / 5 * i
var y = this.options.height / 2
var deg = randomNum(-30, 30)
/** 设置旋转角度和坐标原点**/
ctx.translate(x, y)
ctx.rotate(deg * Math.PI / 180)
ctx.fillText(txt, 0, 0)
/** 恢复旋转角度和坐标原点**/
ctx.rotate(-deg * Math.PI / 180)
ctx.translate(-x, -y)
}
/** 绘制干扰线**/
for (var i = 0; i < 4; i++) {
ctx.strokeStyle = randomColor(40, 180)
ctx.beginPath()
ctx.moveTo(randomNum(0, this.options.width), randomNum(0, this.options.height))
ctx.lineTo(randomNum(0, this.options.width), randomNum(0, this.options.height))
ctx.stroke()
}
/** 绘制干扰点**/
for (var i = 0; i < this.options.width / 4; i++) {
ctx.fillStyle = randomColor(0, 255)
ctx.beginPath()
ctx.arc(randomNum(0, this.options.width), randomNum(0, this.options.height), 1, 0, 2 * Math.PI)
ctx.fill()
}
},
/** 验证验证码**/
validate: function (code) {
var code = code.toLowerCase()
var v_code = this.options.code.toLowerCase()
if (code == v_code) {
return true
} else {
return false
}
}
}
/** 生成字母数组**/
function getAllLetter () {
var letterStr = 'a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z'
return letterStr.split(',')
}
/** 生成一个随机数**/
function randomNum (min, max) {
return Math.floor(Math.random() * (max - min) + min)
}
/** 生成一个随机色**/
function randomColor (min, max) {
var r = randomNum(min, max)
var g = randomNum(min, max)
var b = randomNum(min, max)
return 'rgb(' + r + ',' + g + ',' + b + ')'
}
export {
GVerify
}
2.2 登录页面
2.2.1 引入组件
[....<script>]import { GVerify } from '../../static/js/verifyCode';
[export default { ....]2.2.2 定义验证对象
注意 verifyCode
data: function () {
return {
title: '若晨后台管理系统',
ruleForm: {
username: '',
password: '',
verifyCode: ''
},
rules: {
username: [
{ required: true, message: '请输入用户名', trigger: 'blur' }
],
password: [{ required: true, message: '请输入密码', trigger: 'blur' }],
verifyCode: [
{ required: true, message: '请输入验证码', trigger: 'blur' }
