html 表单 dom 注意跟表单的name值一致 <script type="text/javascript"> function checkForm() { var theForm = document.form1; if(theForm.username.value=="") //html 表单 dom 注意跟表单的name值一致 { window.alert("用户名不能为空"); return false; }else if
L = ['you','me','you','me','you','me','you'] D = {} for i in L: D[i] += 1 print(D) 执行以下代码会发生错误 Traceback (most recent call last): File line 4, in <module> D[i] += 1 KeyError: 'you' Process finished with exit code 1 为什么呢?因为我们在定义字典的时候没设置默认值,电脑找不到相应对象,
随机初始化Embedding from keras.models import Sequential from keras.layers import Embedding import numpy as np model = Sequential() model.add(Embedding(1000, 64, input_length=10)) # the model will take as input an integer matrix of size (batch, input_lengt
//封装post时候,表单中所有具有name数据的表单元素的值,并返回“n=1&p=a” function serialize(formid) { var arr = []; var ipts = document.getElementById(formid).getElementsByTagName('input'); for (var i = 0; i < ipts.length; i++) { if (ipts[i].type=='text') { if (ipts[i].name)
function update() { //document.form表单的name值.input输入框的name值 var username = document.form1.username; var mobile = document.form1.mobile; var qq = document.form1.qq; } <form name="form1" method="post" action=""> <table
