获得徽章 24
- node-sass 下载失败？试一试再package.json中，把node-sass改成"node-sass": "npm:sass" 或者 "npm:sass@^x.y.z"赞过
42 - 全网变灰
只需要在html加一个class类，比如class="xxx-filter"
.xxx-filter {
filter: grayscale(100%);
-webkit-filter: grayscale(100%);
-moz-filter: grayscale(100%);
-ms-filter: grayscale(100%);
-o-filter: grayscale(100%);
filter: url(desaturate.svg#grayscale);
filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);
-webkit-filter: grayscale(1);
} #码上掘金#展开等人赞过 评论4 - 求目标值是由数组元素的哪两个值之和的下标
var arr = [3,4,5,39,6,42,76]
var tag = 81; // 返回下标[2,6]
function ab(arry,target){
var a = [];
for(var i =0;i<arry.length;i++){
var tmp = target - arry[i];
if(a[tmp] != undefined) return [a[tmp],i]
a[arry[i]] = i;
}
return un;
}展开赞过 评论1