vue3滑块验证使用vue3-slide-verify,宽度自适应
vue3使用vue3-slide-verify实现图片滑块验证是否机器人操作,实现验证模块宽度自适应
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vue3-slide-verify地址:https://gitee.com/monoplasty/vue3-slide-verify,使用方法gitee上面写得挺详细的,在这里增加点补充。
1.引入使用
1.1安装npm依赖
npm install --save vue3-slide-verify
1.2使用
在需要用到的组件中注册
import SlideVerify, { SlideVerifyInstance } from "vue3-slide-verify";
import "vue3-slide-verify/dist/style.css";
参考如下写法:
<template>
<div>
<slide-verify
:l="42"
:r="10"
:w="400"
:h="200"
ref="block"
:imgs="imgs"
:slider-text="text"
:accuracy="accuracy"
@again="onAgain"
@success="onSuccess"
@fail="onFail"
@refresh="onRefresh"
></slide-verify>
<button class="btn" @click="handleClick">在父组件可以点我刷新哦</button>
<div>{{ msg }}</div>
</div>
</template>
<script lang="ts">
import { defineComponent, ref } from "vue";
// 局部注册组件,需要单独引用组件样式
// 只提供局部引用的方式,不再采用插件形式,方便按需加载,减少主包大小
import SlideVerify, { SlideVerifyInstance } from "vue3-slide-verify";
import "vue3-slide-verify/dist/style.css";
import img from "../assets/images/1.jpeg";
export default defineComponent({
components: { SlideVerify },
setup() {
const msg = ref("");
const block = ref<SlideVerifyInstance>();
const imgs = ref([img,img,img,img]);
const onAgain = () => {
msg.value = "检测到非人为操作的哦! try again";
// 刷新
block.value?.refresh();
};
const onSuccess = (times: number) => {
msg.value = `login success, 耗时${(times / 1000).toFixed(1)}s`;
};
const onFail = () => {
msg.value = "验证不通过";
};
const onRefresh = () => {
msg.value = "点击了刷新小图标";
};
const handleClick = () => {
// 刷新
block.value?.refresh();
msg.value = "";
};
return {
imgs,
block,
msg,
text: "向右滑动->",
accuracy: 1,
onAgain,
onSuccess,
onFail,
onRefresh,
handleClick,
};
},
});
</script>
模板中的一些参数解释:
l:滑块(拼图块)的边长
r:滑块(拼图块)圆的半径
w:整个验证模块、canvas的宽
h:整个验证模块、canvas的高
imgs:验证的图片数组,图片需使用import引入
slider-text:滑块显示文本
2.验证模块宽度自适应
错误模板:
<div name="verify" :class="isShowCanvas?'showCanvas':''" class="enter-x" id="verify">
<slide-verify
ref="verify"
:l="42"
:r="10"
:w="verifyWidth"
:h="267"
:slider-text="sliderText"
:accuracy="accuracy"
:imgs="verifyImgs"
@again="verifyAgain"
@success="verifySuccess"
@fail="verifyFail"
@refresh="verifyRefresh"
></slide-verify>
<div :class="isVerifySuccess?'text-green-400':'text-red-400'">{{ verifyMsg }}</div>
</div>
上面的例子中,使用verifyWidth来动态控制宽度。当页面宽度改变时,改变verifyWidth,这样验证模块的宽度也会跟着改变。但事实是,滑动条的宽度改变了,canvas的宽度也改变了,但是canvas中绘制的图片宽度不变。估计是因为canvas宽度改变,但是vue3-slide-verify这个组件绘制图片的代码没有改变绘制的图片宽度,绘制的图片宽度依旧是初始化的图片宽度。所以使用了v-if来让vue3-slide-verify这个组件刷新,让canvas重新绘制图片,这样就可以实现宽度自适应了。另外verifyWidth的初始化定义应该是 const verifyWidth = ref(),咱实力有限也不知道为什么这么设才有用,但是就这么设吧😁
正确模板:
<template>
<div name="verify" :class="isShowCanvas?'showCanvas':''" class="enter-x" id="verify">
<slide-verify
v-if="reload"
ref="verify"
:l="42"
:r="10"
:w="verifyWidth"
:h="267"
:slider-text="sliderText"
:accuracy="accuracy"
:imgs="verifyImgs"
@again="verifyAgain"
@success="verifySuccess"
@fail="verifyFail"
@refresh="verifyRefresh"
></slide-verify>
<div :class="isVerifySuccess?'text-green-400':'text-red-400'">{{ verifyMsg }}</div>
</div>
</template>
<script lang="ts" setup>
import { reactive, ref, unref, onMounted, computed, nextTick } from 'vue';
import SlideVerify, { SlideVerifyInstance } from "vue3-slide-verify";
import "vue3-slide-verify/dist/style.css";
import img from "../../../assets/images/1.jpeg";
const verifyMsg = ref("");
const sliderText = ref("向右滑动->") //滑块文字
const accuracy = ref(1) //精确度小,可允许的误差范围小;为1时,则表示滑块要与凹槽完全重叠,才能验证成功。默认值为5
const verify = ref<SlideVerifyInstance>();
const verifyImgs = ref([img,img,img,img])
const verifyWidth = ref()
const reload = ref(false)//用于v-if让组件SlideVerify刷新,如果不刷新,页面宽度改变的情况下,组件SlideVerify中canvas绘制的图片宽度不会改变
const isShowCanvas = ref(false)
const isVerifySuccess = ref(false)
onMounted(()=> {
setWerifyWidth()
window.onresize = () => {
reload.value = false
setWerifyWidth()
}
})
async function setWerifyWidth() {
let verify = await getverify()
verifyWidth.value = verify.offsetWidth
reload.value = true
}
function getverify() {
return new Promise((resolve,reject) => {
//要写在定时器里面才能够获取得到document.getElementById('verify')的值
//本例子这里是id为verify的元素宽度是自适应的,获取到这个宽度,将验证模块的宽度也设为这个宽度
//具体方法具体实现,可参考本例子
let timer = setTimeout(function(){
let verify = document.getElementById('verify')
clearTimeout(timer)
resolve(verify)
},1);
})
}
function verifySuccess (times: number) {
isVerifySuccess.value = true
verifyMsg.value = `验证成功, 耗时${(times / 1000).toFixed(1)}s`;
}
function verifyFail() {
verifyMsg.value = "验证不通过";
};
function verifyRefresh () {
//点击刷新小图标
isVerifySuccess.value = false
// verifyMsg.value = "点击刷新";
};
function handleClick () {
// 刷新
isVerifySuccess.value = false
verify.value?.refresh();
verifyMsg.value = "";
};
</script>
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