How to escape click event in vue's html

In Vue, we usually use the v-on directive to bind click events, for example:

<button v-on:click="handleClick">点击我</button>

This code indicates that when this button is clicked, a method named handleClick will be executed.

However, in some cases, we need to display some characters with special meaning in HTML, such as the less than sign (<) or the comparison sign (&). These characters may be interpreted by the browser as HTML tags or entities, causing display problems.

To avoid this situation, we need to escape these characters. Vue provides a built-in method to achieve this function, the v-html directive.

Using the v-html directive, we can render HTML code into HTML elements, for example:

<div v-html="htmlCode"></div></p>
<p>This code means rendering the HTML code stored in the htmlCode variable into a div element. </p>
<p>However, when we use the v-html directive, Vue will by default prohibit rendering any JavaScript code or event bindings contained in it due to security issues. This is to prevent XSS attacks from occurring. </p>
<p>If we really need to use JavaScript code or bind events in HTML, we need to use another instruction v-once provided by Vue to prevent Vue from compiling the content. </p>
<p>For example, if we want to render a button containing a click event in HTML, we can use the v-html and v-once directives as follows: </p>
<pre class="brush:php;toolbar:false"><div v-html="`<button v-once v-on:click='${()=>console.log("clicked")}'></button>`"></div>

This code means that a button containing The button click event is rendered into HTML.

It should be noted that due to security issues, it is not recommended to use JavaScript code and event binding directly in HTML code, especially when the rendered content comes from user input. In this case, it's better to handle the logic in other ways, such as using components or related methods.

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