9 Utils

1 设置document.title(兼容微信浏览器)

 1 setDocumentTitle(t){
 2       document.title = t;
 3       let i = document.createElement('iframe');
 4       i.src = 'https://app.img.kangfuzi.com/icon/favicon.ico';
 5       i.style.display = 'none';
 6       i.onload = function () {
 7           setTimeout(function () {
 8               i.parentNode.removeChild(i);
 9           }, 9);
10       };
11       document.body.appendChild(i);
12   }

2 获取css属性（兼容IE）

 1 getCss(curEle,attr){
 2       let val = null;
 3       let reg = null;
 4       if("getComputedStyle" in window){
 5           val = window.getComputedStyle(curEle,null)[attr];
 6       } else {   //ie6~8不支持上面属性
 7           if(attr === "opacity"){
 8               val = curEle.currentStyle["filter"];   
 9               reg = /^alpha(opacity=(d+(?:.d+)?))$/i;
10               val = reg.test(val)?reg.exec(val)[1]/100:1;
11           } else {
12               val = curEle.currentStyle[attr];
13           }
14       }
15       reg = /^(-?d+(.d)?)(px|pt|em|rem)?$/i;
16       return reg.test(val)?parseFloat(val):val;
17   }

3 深Copy

function extend( dest, ...sources ) {
    const obj = sources[ 0 ];
    for( let property in obj ) {
        if( obj.hasOwnProperty( property ) ) {
            dest[ property ] = obj[ property ];
        }
    }
    if( sources.length > 1 ) {
        return extend( dest, ...sources.splice( 1, sources.length - 1 ) );
    }
    return dest;
}