在 th:onsubmit thymeleaf 中添加变量 [英] Add Variable inside th:onsubmit thymeleaf

问题描述

我正在尝试在 th:onsubmit 中添加变量

I'm trying to add variable inside th:onsubmit with

th:onsubmit="return confirm('Hi '" + ${user.name} +  "')"

但它总是让我出错

格式错误的标记:属性+"在元素中出现多次

Malformed markup: Attribute "+" appears more than once in element

我在 thymeleaf 官方文档上也找不到 onsubmit 的例子

also i can't find onsubmit example on thymeleaf official document

推荐答案

onsubmit 没有什么特别之处，这就是为什么官方文档中没有关于它的任何内容——你只是没有格式化表达正确.我会像这样格式化表达式:

There is nothing special about onsubmit which is why there is nothing in the official documentation about it -- you're simply not formatting the expression correctly. I would format the expressions like this:

th:data-username="${user.name}"
onsubmit="return confirm('Hi ' + this.getAttribute('data-username'))"

(为了避免安全错误，Thymeleaf 可能会禁止您直接在 JavaScript 中连接字符串，这就是我将其分离为它自己的属性的原因.)

(To avoid security errors, Thymeleaf may prohibit you from concatenating strings directly in your JavaScript, which is why I'm separating it out to it's own attribute.)

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