本文介绍了禁用react-router Link反应的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述



我尝试了以下方法:

 类ShoppingCartLink扩展了React.Component {

构造函数(){
super();
ShoppingCartStore.register(this.refresh.bind(this));

this.state = {count:0};
this.item =项目;
this.linkDisabled = new Boolean(true);
}

refresh(){
if(ShoppingCartStore.items.length === 0 || ShoppingCartStore.items.length> 1)
{
this.item =项目;
}
else
{
this.item =item;
}

if(ShoppingCartStore.items.length!== 0)
{
this.linkDisabled = false;
}

this.setState({count:ShoppingCartStore.items.length});

$ b $ render(){
return(
< div>
< button type =buttondisabled = {this.linkDisabled} >
<链接到=shoppingCart>购物车:{this.state.count} {this.item}< / Link>
< / button>
< ; / div>

}
}

默认只要没有物品被添加到购物车,链接应该是disbaled。
我通过它进行了调试,并且在render()中将构造函数调用为linkDisabled时设置为true。问题是这个链接仍然是启用的。



感谢您的帮助!

解决方案

div>

 构造函数(){
super();
ShoppingCartStore.register(this.refresh.bind(this));

this.state = {
count:0,
linkDisabled:true
};


handleClick(event){
if(this.state.linkDisabled)event.preventDefault();
}

refresh(){

const length = ShoppingCartStore.items.length;

this.setState({
count:length,
linkDisabled:(length === 0)
});
}

render(){
const length = ShoppingCartStore.items.length;
return(< div>
< Link to =shoppingCart
onClick = {this.handleClick.bind(this)}>购物车:{this.state.count} {((length> 0)?items:item)}< / Link>
< / div>);
}

经过一些重构...试试这个?


I'm new to React and got a issue to disable a link covert by a button element.

I tried the following:

class ShoppingCartLink extends React.Component {

constructor(){
    super();
    ShoppingCartStore.register(this.refresh.bind(this));

    this.state = {count:0};
    this.item = "items";
    this.linkDisabled = new Boolean(true);
}

refresh(){
    if (ShoppingCartStore.items.length === 0 || ShoppingCartStore.items.length > 1 )
    {
        this.item = "items";
    }
    else
    {
        this.item = "item";
    }

    if (ShoppingCartStore.items.length !== 0)
    {
        this.linkDisabled = false;
    }

    this.setState({count: ShoppingCartStore.items.length});
}

render() {
    return (
        <div>
            <button type="button" disabled = {this.linkDisabled}>
                <Link to="shoppingCart">Shopping Cart: {this.state.count} {this.item}</Link>
            </button>
        </div>
    )
  }
}

By default the Link should be disbaled as long no item is added to the cart.I debugged through it and when the constructor is called "linkDisabled" is set to true as well in render(). The problem is that the link is still enabled.

Thanks for your help!

解决方案
constructor(){
   super();
   ShoppingCartStore.register(this.refresh.bind(this));

   this.state = {
     count:0,
     linkDisabled: true
   };
}

handleClick(event) {
   if(this.state.linkDisabled) event.preventDefault();
}

refresh(){

   const length = ShoppingCartStore.items.length;

   this.setState({
      count: length,
      linkDisabled: (length === 0)
   });
}

render() {
   const length = ShoppingCartStore.items.length;
   return (<div>
            <Link to="shoppingCart"
                  onClick={this.handleClick.bind(this)}>Shopping Cart: {this.state.count} {((length > 0)?"items":"item")}</Link>
    </div>);
}

After some refactoring ... Try this ?

这篇关于禁用react-router Link反应的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

07-17 13:52
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