The for attribute specifies which form element a label is bound to. Looking at the number of projects linking to this issue is a good hint to see what I mean. Content is available under these licenses. That means that this script-accessible property is used to set and read the value of the content property for, which is the ID of the label's associated control element. A DOMString which … Examples might be simplified to improve reading and basic understanding. That means that this script-accessible property is used to set and read the value of the content property for, which is the ID of the label's associated control element.. Syntax controlId = HTMLLabelElement.htmlFor HTMLLabelElement.htmlFor = newId Value. React's goal is in many ways to render HTML in a web page. The for attribute specifies which form element a label is bound to. 由于 for 在 JavaScript 中是保留字,所以 React 元素中使用了 htmlFor 来代替。 onChange . PHP The htmlFor property sets or returns the value of the for attribute of a label. onChange . defaultChecked is the uncontrolled equivalent, which sets whether the component is checked when it is first mounted. JavaScript Since the value attribute is set on our form element, the displayed value will always be this.state.value, making the React state the source of truth.Since handleChange runs on every keystroke to update the React state, the displayed value will update as the user types.. With a controlled component, the input’s value is always driven by the React state. The newsletter is offered in English only at the moment. This is useful for building controlled components. The ReactDOM.render() function takes two arguments, HTML code and an HTML element. Sign in to enjoy the benefits of an MDN account. Try it on CodePen. If you'd like to contribute to the data, please check out, https://github.com/mdn/browser-compat-data. Change the value of the for attribute of a label: HTML reference: HTML