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Omi 生命周期

生命周期

Lifecycle methodWhen it gets called
componentWillMount / installbefore the component gets mounted to the DOM
componentDidMount / installedafter the component gets mounted to the DOM
componentWillUnmount / uninstall    prior to removal from the DOM                  
componentWillReceivePropsbefore new props get accepted
shouldComponentUpdatebefore render(). Return false to skip render
componentWillUpdate / beforeUpdatebefore render()
componentDidUpdate / afterUpdateafter render()

举个例子

class Timer extends Omi.Component {
    install () {
        this.data = {secondsElapsed: 0};
    }

    tick() {
        this.data.secondsElapsed++;
        this.update();
    }

    installed(){
        this.interval = setInterval(() => this.tick(), 1000);
    }

    uninstall() {
        clearInterval(this.interval);
    }

    render () {
        return <div>Seconds Elapsed:<span> {{secondsElapsed}}</span></div>;
    }
}


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MIP.setData({ 'pageTheme' : getCookie('pageTheme') || {'day':true, 'night':false}, 'pageFontSize' : getCookie('pageFontSize') || 20 }); MIP.watch('pageTheme', function(newValue){ setCookie('pageTheme', JSON.stringify(newValue)) }); MIP.watch('pageFontSize', function(newValue){ setCookie('pageFontSize', newValue) }); function setCookie(name, value){ var days = 1; var exp = new Date(); exp.setTime(exp.getTime() + days*24*60*60*1000); document.cookie = name + '=' + value + ';expires=' + exp.toUTCString(); } function getCookie(name){ var reg = new RegExp('(^| )' + name + '=([^;]*)(;|$)'); return document.cookie.match(reg) ? JSON.parse(document.cookie.match(reg)[2]) : null; }