-1
我有一些Javascript代碼有變量1-9,我覺得可以更有效地寫入?使用某種循環?更有效的方式來列出在Javascript中類似的多個變量?
這是我看起來很潦草,低效的代碼片段。有沒有更好的方法來循環連續的變量?
編輯:
最後我只是用for循環來創建每個變量獨立的數組:
var num = []
for (var i = 0; i < imgAr.length; ++i) {
num[i] = Math.floor(Math.random() * imgAr.length)
}
var img = []
for (var j = 0; j < imgAr.length; ++j) {
img[j] = imgAr[ num[j] ]
}
var imgStr = []
for (var k = 0; k < imgAr.length; ++k) {
imgStr[k] = '<img src="' + path + img[k] + '" alt = "">'
}
var num1 = Math.floor(Math.random() * imgAr.length);
var num2 = Math.floor(Math.random() * imgAr.length);
var num3 = Math.floor(Math.random() * imgAr.length);
var num4 = Math.floor(Math.random() * imgAr.length);
var num5 = Math.floor(Math.random() * imgAr.length);
var num6 = Math.floor(Math.random() * imgAr.length);
var num7 = Math.floor(Math.random() * imgAr.length);
var num8 = Math.floor(Math.random() * imgAr.length);
var num9 = Math.floor(Math.random() * imgAr.length);
var img1 = imgAr[ num1 ];
var img2 = imgAr[ num2 ];
var img3 = imgAr[ num3 ];
var img4 = imgAr[ num4 ];
var img5 = imgAr[ num5 ];
var img6 = imgAr[ num6 ];
var img7 = imgAr[ num7 ];
var img8 = imgAr[ num8 ];
var img9 = imgAr[ num9 ];
var imgStr1 = '<img src="' + path + img1 + '" alt = "">';
var imgStr2 = '<img src="' + path + img2 + '" alt = "">';
var imgStr3 = '<img src="' + path + img3 + '" alt = "">';
var imgStr4 = '<img src="' + path + img4 + '" alt = "">';
var imgStr5 = '<img src="' + path + img5 + '" alt = "">';
var imgStr6 = '<img src="' + path + img6 + '" alt = "">';
var imgStr7 = '<img src="' + path + img7 + '" alt = "">';
var imgStr8 = '<img src="' + path + img8+ '" alt = "">';
var imgStr9 = '<img src="' + path + img9 + '" alt = "">';
你可以寫類似的功能活動和 – Yogesh
你的意思是'無功ARR使用返回值= [];對於(var i = 0; i <9; i ++){ arr.push(''); }' – mplungjan
只需重新排序並使用llops。這裏有一個通用的配方:假設A1是第一次動作A的迭代,你將A1,A2,A3 .. B1,B2,B3 .. C1,C2,C3...重新命名爲A1,B1,C1,A2 ,B2,C2'然後循環遍歷'(1-n){Ax,Bx,Cx}'。 – Bellian