信号强度

需求

vue项目，需要实时监控系统信号，要求：

1.共五格信号；
2.信号0-100为满值，信号100-500为四格，信号500-1000为三格，信号1000-5000为两格，信号5000-20000为一格，大于20000为无信号；
3.信号0-100为绿色，信号100-500为绿色，信号500-1000为黄色，信号1000-5000为黄色，信号5000-20000为红色，大于20000为灰色。

效果

图标地址

免费 信号图标-六个图标-图标资源

https://download.csdn.net/download/xuelong5201314/88701607

代码

signalStrength.vue 文件

<!-- 信号强度 -->
<template><div class="signal-strength"><img v-if="strength === 5" :src="url5" /><img v-else-if="strength === 4" :src="url4" /><img v-else-if="strength === 3" :src="url3" /><img v-else-if="strength === 2" :src="url2" /><img v-else-if="strength === 1" :src="url1" /><img v-else :src="url0" /></div>
</template><script>
export default {name: 'SignalStrength',props: {// 信号强度，默认满格信号strength: {type: Number,default: 5,validator: function (value) {// 必须为不大于5的整数if (value > 5 || value < 0) {return false} else {return true}}}},data() {return {url0: require('@/assets/image/signal-0.png'),url1: require('@/assets/image/signal-1.png'),url2: require('@/assets/image/signal-2.png'),url3: require('@/assets/image/signal-3.png'),url4: require('@/assets/image/signal-4.png'),url5: require('@/assets/image/signal-5.png')}}
}
</script><style lang="scss" scoped>
.signal-strength {width: 16px;height: 16px;position: absolute;top: 6px;left: 50%;transform: translate(-50%, -50%);img {-webkit-user-drag: none;user-select: none;}
}
</style>

index.vue 父组件

<template><div class="content-piece"><div class="content-item-two">网络延迟：<span v-if="systemSignal > 0">{{ systemSignal }}ms</span> <span v-else>无信号</span>网络信号：<div class="signal-box"><signal-strength :strength="systemSignalNum"></signal-strength></div></div></div>
</template><script>
import signalStrength from './signalStrength.vue'
import api from './api'
export default {components: {signalStrength},data() {return {systemSignal: 0, // 系统信号systemSignalNum: 0 // 系统信号栏}},created() {this.getSignal()},beforeDestroy() {// 销毁定时器clearInterval(this.timer)},methods: {// 获取系统信号延迟getSystemSignal() {const time = new Date().getTime()// 当前请求没有返回值，通过计算请求成功后的时间与发送请求前的时间之差获取当前信号api.getSystem().then(res => {const delay = new Date().getTime() - timethis.systemSignal = delaythis.systemSignalNum = this.calculateSignal(delay)}).catch(() => {this.systemSignal = -1 // 系统信号this.systemSignalNum = 0 // 系统信号栏})},// 获取信号延迟getSignal() {this.getSystemSignal()this.timer = setInterval(() => {this.getSystemSignal()}, 3000)},// 计算信号calculateSignal(num) {let signalValue = 0if (num <= 100 && num > 0) {signalValue = 5} else if (num > 100 && num <= 500) {signalValue = 4} else if (num > 500 && num <= 1000) {signalValue = 3} else if (num > 1000 && num <= 5000) {signalValue = 2} else if (num > 5000 && num <= 20000) {signalValue = 1} else {signalValue = 0}return signalValue}}
}
</script>