How to clear radio selection status in uniapp

With the popularity of mobile applications, the technology stack of front-end development is also constantly expanding. Uniapp is a cross-platform development framework that has recently emerged. Uniapp will also encounter some problems during use. One of them is how to clear the selected state when using radio buttons.

Uniapp is a cross-platform development framework that supports multi-terminal development and can develop applications that run on major platforms at the same time. The radio button is a component often used in Uniapp development. It can help us select one of multiple options.

However, when we use the radio button box, we may encounter the problem of clearing the selected state. In some scenarios, such as clicking "All", the status of other options should be cleared, but Uniapp's default radio button does not seem to provide this function. So, how to clear the status of a radio button in Uniapp?

The solution is as follows:

First, we need to save the currently selected value to a variable through the v-model directive within the component. Next, add a "Reset" button outside the radio button box. When the button is clicked, we clear the selected state of the current radio button box by modifying the value of the variable. The code is as follows:

<template>
  <div>
    <el-radio-group v-model="radioValue">
      <el-radio label="option1">选项1</el-radio>
      <el-radio label="option2">选项2</el-radio>
      <el-radio label="option3">选项3</el-radio>
    </el-radio-group>
    <button @click="reset">重置</button>
  </div>
</template>
 
<script>
export default {
  data() {
    return {
      radioValue: ''
    }
  },
  methods: {
    reset() {
      this.radioValue = ''
    }
  }
}
</script>

In the above code, we bind a v-model to the radio button component to save the current selected state. Then a button is added outside the component and the current radioValue variable is modified in the click event, thereby clearing the selected state of the radio button.

It should be noted that in order to make the status of multiple radio button boxes independent of each other, we need to bind different variables to each radio button box. At the same time, if we need to use this clear status function in the same group of radio button boxes, we can also set a public variable to save the selected status of all radio button boxes in the group, and clear them uniformly in the reset button click event.

Summary:

Clearing the selected state of the radio button in Uniapp is actually not very complicated. By using v-model, we can easily obtain the selected status of the current radio button and modify the bound variables when we need to clear the status. However, it should be noted that in order to prevent the status of multiple radio button boxes from interfering with each other, we need to bind different variables to each radio button box.

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