I need add class "active" after click to button and remove all other "active" classes.
Look here please: https://codepen.io/azat-io/pen/RWjyZX
var Tags = React.createClass({
setFilter: function(filter) {
this.props.onChangeFilter(filter);
},
render: function() {
return <div className="tags">
<button className="btn active" onClick={this.setFilter.bind(this, '')}>All</button>
<button className="btn" onClick={this.setFilter.bind(this, 'male')}>male</button>
<button className="btn" onClick={this.setFilter.bind(this, 'female')}>female</button>
<button className="btn" onClick={this.setFilter.bind(this, 'child')}>child</button>
<button className="btn" onClick={this.setFilter.bind(this, 'blonde')}>blonde</button>
</div>
}
});
var Kid = React.createClass({
render: function() {
return <ul>
<li>{this.props.name}</li>
</ul>
}
});
var List = React.createClass({
getInitialState: function() {
return {
filter: ''
};
},
changeFilter: function(filter) {
this.setState({
filter: filter
});
},
render: function() {
var list = this.props.Data;
if (this.state.filter !== '') {
list = list.filter((i)=> i.tags.indexOf(this.state.filter) !== -1);
console.log(list);
}
list = list.map(function(Props){
return <Kid {...Props} />
});
return <div>
<h2>Kids Finder</h2>
<Tags onChangeFilter={this.changeFilter}/>
{list}
</div>
}
});
var options = {
Data: [{
name: 'Eric Cartman',
tags: ['male', 'child']
},{
name: 'Wendy Testaburger',
tags: ['female', 'child']
},{
name: 'Randy Marsh',
tags: ['male']
},{
name: 'Butters Stotch',
tags: ['male', 'blonde', 'child']
},{
name: 'Bebe Stevens',
tags: ['female', 'blonde', 'child']
}]
};
var element = React.createElement(List, options);
React.render(element, document.body);
How do I make it better here?
This question is related to
javascript
jquery
reactjs
Since you already have <Tags>
component calling a function on its parent, you do not need additional state: simply pass the filter to the <Tags>
component as a prop, and use this in rendering your buttons. Like so:
Change your render function inside your <Tags>
component to:
render: function() {
return <div className = "tags">
<button className = {this._checkActiveBtn('')} onClick = {this.setFilter.bind(this, '')}>All</button>
<button className = {this._checkActiveBtn('male')} onClick = {this.setFilter.bind(this, 'male')}>male</button>
<button className = {this._checkActiveBtn('female')} onClick = {this.setFilter.bind(this, 'female')}>female</button>
<button className = {this._checkActiveBtn('blonde')} onClick = {this.setFilter.bind(this, 'blonde')}>blonde</button>
</div>
},
And add a function inside <Tags>
:
_checkActiveBtn: function(filterName) {
return (filterName == this.props.activeFilter) ? "btn active" : "btn";
}
And inside your <List>
component, pass the filter state to the <tags>
component as a prop:
return <div>
<h2>Kids Finder</h2>
<Tags filter = {this.state.filter} onChangeFilter = {this.changeFilter} />
{list}
</div>
Then it should work as intended. Codepen here (hope the link works)
Taken from their site.
render() {
let className = 'menu';
if (this.props.isActive) {
className += ' menu-active';
}
return <span className={className}>Menu</span>
}
this is pretty useful:
https://github.com/JedWatson/classnames
You can do stuff like
classNames('foo', 'bar'); // => 'foo bar'
classNames('foo', { bar: true }); // => 'foo bar'
classNames({ 'foo-bar': true }); // => 'foo-bar'
classNames({ 'foo-bar': false }); // => ''
classNames({ foo: true }, { bar: true }); // => 'foo bar'
classNames({ foo: true, bar: true }); // => 'foo bar'
// lots of arguments of various types
classNames('foo', { bar: true, duck: false }, 'baz', { quux: true }); // => 'foo bar baz quux'
// other falsy values are just ignored
classNames(null, false, 'bar', undefined, 0, 1, { baz: null }, ''); // => 'bar 1'
or use it like this
var btnClass = classNames('btn', this.props.className, {
'btn-pressed': this.state.isPressed,
'btn-over': !this.state.isPressed && this.state.isHovered
});
you can also use pure js to accomplish this like the old ways with jquery
try this if you want a simple way
document.getElementById("myID").classList.add("show-example");
Source: Stackoverflow.com