What to do if vue single quote error occurs

Vue.js is a popular JavaScript framework that provides a concise, component-based front-end development method. However, when developing with Vue.js, we sometimes encounter various strange errors, including single quote errors.

Regarding single quote errors, usually when developers use Vue components, an error message similar to the following appears:

ERROR in ./src/App.vue
Module build failed: SyntaxError: Unexpected token

This error message may appear in the template of the component, such as:

<template>
  <div>
    <p v-if="isShow">点击按钮显示内容</p>
    <button @click="toggle"> {{ isShow ? '隐藏' : '显示' }} </button>
  </div>
</template>

In this case, you may find that the text on the button showing "show" and "hide" will be wrapped in single quotes ('show' and 'hide'), which causes an error.

Why does this error occur?

In Vue.js, the values ​​of text nodes and attributes in templates need to be wrapped in double quotes (""). This is because when Vue.js compiles a template, tools such as babel are used to compile the template into executable JavaScript code. If single quotes (' ') are used, these single quotes will be parsed into JavaScript strings, which will resulting in syntax errors.

Therefore, in Vue.js development, we should use double quotes ("") as much as possible.

How to solve the single quote error?

1. Replace the single quotes in the template with double quotes

<template>
  <div>
    <p v-if="isShow">点击按钮显示内容</p>
    <button @click="toggle"> {{ isShow ? "隐藏" : "显示" }} </button>
  </div>
</template>

In the above example, we replace the single quotes in the button text with double quotes, so that Solve single quote error.

2. Use escape characters

In some cases, it may be difficult to replace single quotes with double quotes. In this case, we can use escape characters to handle single quotes. .

<template>
  <div>
    <p v-if="isShow">点击按钮显示内容</p>
    <button @click="toggle"> {{ isShow ? \'隐藏\' : \'显示\' }} </button>
  </div>
</template>

In the above example, we added a backslash () before the single quote so that the single quote will not be parsed into a string.

Summary

In Vue.js development, single quote error is a common error, which is usually caused by using single quote in the template. To avoid this problem, we should try to use double quotes and use escape characters if necessary. Through the above methods, we can quickly solve the single quote error problem and improve development efficiency.

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