REACT 学习之一:普通表单过滤

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以下JS文件和CSS文件请自行替换,product.json文件里的数据如下:
[
{"category":"Sporting Goods", "price":"$49.99","stocked":true,"name":"Football"},
{"category":"Sporting Goods", "price":"$ 9.99", "stocked":true,"name":"Baseball"},
{"category":"Sporting Goods", "price":"$29.99", "stocked":true,"name":"Basketball"},
{"category":"Electronics Goods","price":"$99.99", "stocked":false,"name":"iPod Touch"},
{"category":"Electronics Goods","price":"$399.99","stocked":true,"name":"iPhone 5"},
{"category":"Electronics Goods","price":"$199.99","stocked":false,"name":"Nexus 7"},
{"category":"PC Goods", "price":"$39.99", "stocked":false,"name":"IBM x2005"},
{"category":"PC Goods", "price":"$19.99", "stocked":false,"name":"IBM x2008"}
]
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<!DOCTYPE html>
<html>
<head>
<script src="react-demos/build/react.js"></script>
<script src="react-demos/build/react-dom.js"></script>
<script src="react-demos/build/browser.min.js"></script>
<script src="react-demos/build/jquery.min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/showdown/0.3.1/showdown.min.js"></script>
<link rel="stylesheet" href="react-demos/build/bootstrap.css" />
<style>
body{
font-family:"microsoft yahei";
padding:20px;
}
</style>
</head>
<body>
<div id="container"></div>
<script type="text/babel">

var Product = React.createClass({
getInitialState:function(){
return ({data:[],onlyStocked:false,filterWord:""})
},
componentDidMount:function(){
$.ajax({
url:this.props.url,
dataType:"json",
success:function(data){
this.setState({data:data});
}.bind(this),
error:function(xhr,status,err){
console.error(this.props.url,status,err.toString());
}.bind(this)
})
},
onlyStock:function(bool){
this.setState({onlyStocked:bool});
},
handleFilter:function(word){
this.setState({filterWord:word});
},
render:function(){
return (
<div>
<SearchBox onlyStocked={this.onlyStock} sendFilter={this.handleFilter}/>
<ProductList data={this.state.data} onlyStock={this.state.onlyStocked} filter={this.state.filterWord}/>
</div>
)
}
});

var SearchBox = React.createClass({
handleChange:function(e){
this.props.onlyStocked(e.target.checked);
},
handleInput:function(e){
this.props.sendFilter(e.target.value);
},
render:function(){
return (
<div>
<p><input type="text" placeholder="Search..." onChange={this.handleInput}/></p>
<p><label><input type="checkbox" onChange={this.handleChange}/>Only show products in stock</label></p>
</div>
)
}
});

var ProductList = React.createClass({
render:function(){
var nowCategory = "";
var listDetails =[];
var onlyStock = this.props.onlyStock;
var filterWord = this.props.filter;
this.props.data.map(function(value){
if(value.category!==nowCategory){
if(onlyStock){
if(value.stocked){
listDetails.push(
<CategoryTable product={value}/>
)
listDetails.push(
<ListTable product={value} filter={filterWord}/>
)
nowCategory=value.category;
}
}else{
listDetails.push(
<CategoryTable product={value}/>
)
listDetails.push(
<ListTable product={value} filter={filterWord}/>
)
nowCategory=value.category;
}
}
else{
if(onlyStock){
if(value.stocked){
listDetails.push(
<ListTable product={value} filter={filterWord}/>
)
}
}else{
listDetails.push(
<ListTable product={value} filter={filterWord}/>
)
}

}

});
return (
<table>
<thead>
<tr>
<th>name</th><th>Price</th>
</tr>
</thead>
<tbody>
{listDetails}
</tbody>
</table>
)
}
});

var CategoryTable = React.createClass({
render:function(){
return (
<tr>
<td colspan="2"><b>{this.props.product.category}</b></td>
</tr>
)
}
});

var ListTable = React.createClass({
render:function(){
if(this.props.filter){

if(this.props.product.name.toLowerCase().indexOf(this.props.filter.toLowerCase())!==-1){
return(
<tr className={this.props.product.stocked?"":"text-danger"}><td>{this.props.product.name}</td><td>{this.props.product.price}</td></tr>
)
}else{
return null;
}
}else{
return(
<tr className={this.props.product.stocked?"":"text-danger"}><td>{this.props.product.name}</td><td>{this.props.product.price}</td></tr>
)
}
}
});


ReactDOM.render(<Product url="product.json"/>,document.getElementById("container"));

</script>
</body>
</html>

posted on 2017-03-15 13:54  32岁学编程  阅读(613)  评论(0编辑  收藏  举报

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