In React, how can I cause anchors to do nothing on

问题:

I have the following html element:

<a href onClick={() => fields.push()}>Add Email</a>

I need the href attribute so bootstrap styles the element with a link styling (color, cursor).

Problem is, if I click that now it causes the browser to redirect. How can I update the above to not redirect the browser onClick but still run fields.push()?

回答1:

You should call preventDefault function from onClick event like this:

class App extends React.Component {
  onClick = (e) => {
    e.preventDefault()
    console.log('onclick..')
  }
  render() {
    return (
      <a href onClick={this.onClick} >Click me</a>
    )
  }
}

You can use something like this particular to your use case:

    const renderEmails = ({ fields }) => (
      ...
      <a href onClick={(e) => {
        e.preventDefault()
        fields.push()
      }}>Add Email</a>
      ...
    )

回答2:

Here's a simple solution,

• On React class component

class App extends React.Component {
  onClick() {
    console.log('onclick..')
  }

  render() {
    return (
      <a href={void(0)} onClick={this.onClick} >Click me</a>
    )
  }
}

React is dropping the javascript:void(0) solution and the href doesn't certainly accept the empty attribute value.

Basically what react wants us to do is to use a different component, for instance a button. We can always make a button look like a link using CSS(and thus, won't contain href and the complexity to remove it's behaviour). So, instead of using an anchor tag as a button, use the button element itself. Hope it makes sense.

回答3:

You should consider write method clickHappens in react component instead of writing this inline. Hope it works!

<a href onClick={(e) => {e.preventDefault(); fields.push()}}> Add Email </a>

回答4:

add javscript:void(0):

<a href="javascript:void(0);" onClick={() => fields.push()}>Add Email</a>

回答5:

fields.push()}>Add Email

In TypeScript href="javascript:void(0);" throws warning, so there any other way to skip that warnings

回答6:

try the following code snippet

<a href="true" ....>