利用流程图的校准 页: 1 下面是<代码>x和y
作为阵列的图表坐标。
var plottingPoints = [[0, 3], [4, 8], [8, 5], [9, 23], [10, 2]];
我只需要取得<代码>y协调的最大价值(e 23)。 请支持专门知识。
利用流程图的校准 页: 1 下面是<代码>x和y
作为阵列的图表坐标。
var plottingPoints = [[0, 3], [4, 8], [8, 5], [9, 23], [10, 2]];
我只需要取得<代码>y协调的最大价值(e 23)。 请支持专门知识。
var plottingPoints = [[0, 3], [4, 8], [8, 5], [9, 23], [10, 2]];
var length = plottingPoints.length;
var maxY = -Infinity;
for(var i = 0; i < length; i++)
maxY = Math.max(plottingPoints[i][1], maxY);
在新的浏览器中,你可以使用ES5 s 。 阵列方法。 此外,<代码>Math.max将所有论点的最高价值归为:
// calculate max value of an array of numbers
Math.max.apply(null, plottingPoints.map(function(element) {
// return y coordinate
return element[1];
}));
var t=plottingPoints[0];
$(plottingPoints ).each (function (i,n){
if (n[1]>t[1]) t=n;
});
页: 1
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