js常用的代码片段

自定义循环函数

const  ff = function () {
    var arry = [];
    (function iterator(i) {
        if(i==4){
            console.log("结束了");
            console.log(arry);
            return;
        };
        arry.push(i);
         iterator(i+1);
    })(0)

};
ff();

---

title 样式的改变

    var oldTitle = null;
$(document).bind('mouseover mouseout mousemove',function(event){           
    var left = event.pageX , top = event.pageY;
    var ele = event.target;
    var title = ele.title;

    var type = event.originalEvent.type;
    if(type == 'mouseover'){
        oldTitle = title;
        ele.title = '';
        //if(title && title.length > 0){                
        if(title != null){              
            var showEle = $('<div></div>',{text:title,class:'showTitleBox'}).css({
                position:'absolute',
                top:top+10,
                left:left,
                border:'1px solid #CCC',
                borderRadius:'5px',
                background:"infobackground",
                fontFamily:'SimHei'
            })
            showEle.appendTo('body');               
        }
    }else if(type == 'mouseout'){
        ele.title = oldTitle;
        $('.showTitleBox').remove();
    }else if(type == 'mousemove'){
        $('.showTitleBox').css({
            top:top+10,
            left:left
        })
    }
})

---

时间戳

function add0(m) {
    return m < 10 ? '0' + m : m
};

//时间戳
function getLocalTime(nS) {
    // return new Date(parseInt(nS) * 1000).toLocaleString().replace(/:\d{1,2}$/,' ');
    // return new Date(parseInt(nS) * 1000).toLocaleString().replace(/年|月/g, "-").replace(/日/g, " ");

    var ti = new Date(parseInt(nS) * 1000);
    var y = ti.getFullYear();
    var m = ti.getMonth() + 1;
    var d = ti.getDate();
    var h = ti.getHours();
    var mm = ti.getMinutes();
    var s = ti.getSeconds();
    return y + '-' + add0(m) + '-' + add0(d) //+ ' ' + add0(h) + ':' + add0(mm);
}