$(function(){ //初始化 doPrice()// 鼠標移上全選框變色效果 $('.fa-check...
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一、基本思路：1.寫好基本樣式后，通過id或標簽名獲取到數字、文本框及按鈕2.聲明一個變量n，通過length方法獲取到當前文本框字數，n=總字數-文本框字數3.用n的值進行判斷，若n>0,文本...
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步驟: 1.聲明這兩個變量 2.通過id定位到全選框和選框 3.并獲取到選框數組的長度用來決定循環(huán)的次數 4.利用for循環(huán)和if條件語句判斷,實現全選<!DOCTYPE html&...
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【1】js改變css樣式：document.getElementById().style.屬性名="屬性值"?！?】改變元素的屬性值： ...
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