js 截取字符串长度,截取时中文按2个字节计算 function worldLimit(className,factLength){ $('.'+className).each(function(){ var content = $(this).text(); var allLength = 0; for (var i = 0; i < con ...
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type"
1、文件打开 打开模式: f = open('test.txt','r') #r,只读模式,文件不存在时,报错 f = open('test.txt','w') #w,只写模式,文件不存在时,创建文件,文件存在时,清空原文件 f = open('test.txt','x') #x,python3新增的模式,当文件存在时报错,文件不存在时,创建文件并写入 f = open('test ...
import numpy as np import matplotlib.pyplot as plt plt.figure(1) plt.figure(2) ax1 = plt.subplot(211) ax2 = plt.subplot(212) x = np.linspace(0, 3, 100) for i in xrange(5): plt.figure(1) p ...