Yuricreatedaformulaforabutton.Thecodeissupposedtosetthevalueofanexistingfieldcalledtitle.Heusedthefollowingformula:title:=@propercase(title);afterthefoumularuns,thetitlefieldisnull.Why?()A.thevalueofonefieldcannotbesetfromthevalueinanotherfieldB.thetextst

题目
Yuricreatedaformulaforabutton.Thecodeissupposedtosetthevalueofanexistingfieldcalledtitle.Heusedthefollowingformula:title:=@propercase(title);afterthefoumularuns,thetitlefieldisnull.Why?()

A.thevalueofonefieldcannotbesetfromthevalueinanotherfield

B.thetextstringintheformulaissettonull.Thusnotescannotvalidatetheformula

C.whensettingthevalueofafield,theformulamustbeinthefield?sinputvalidationevent

D.theformuladoesnotspecifythattitleisanexistingfield.Thusitisinterpretedasatemporaryvariable


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参考答案和解析
参考答案:D
更多“Yuricreatedaformulaforabutton.Thecodeissupposedtosetthevalueofanexistingfieldcalledtitle.Heusedthefollowingformula:title:=@propercase(title);afterthefoumularuns,thetitlefieldisnull.Why?() ”相关问题
  • 第1题:

    假设程序只有下面一行代码,则程序的运行结果是: print(title)

    A.输出title的值

    B.定义title变量

    C.报错,因为title没有定义

    D.输出并定义title的值和变量


    报错,因为title没有定义

  • 第2题:

    以下哪个代码能实现将id为title的元素隐藏?

    A.document.getElementById("title").style.display = "none";

    B.document.getElementsByName("title").style.display = "none";

    C.document.getElementById("title").style.display = "block";

    D.document.getElementsByClassName("title").style.display = "none";


    document.getElementById('p1')

  • 第3题:

    在NCBI数据库中搜索人类的血红蛋白序列,以下哪个搜索条件最优?

    A.human AND myoglobin

    B.human AND myoglobin[title]

    C.human[orgn] AND myoglobin [title]

    D.human[title] AND myoglobin [title]


    C

  • 第4题:

    3、在J2EE中,下列()语句可以获取页面请求中的一个文本框的输入(文本框的名字为title)。

    A.request.getParameters(“title”);

    B.response.getParameter(“title”);

    C.request.getAttribute(“title”);

    D.request.getParameter(“title”);


    request.getParameter(“title”);

  • 第5题:

    【单选题】以下哪个写法可以获取选择器选中元素的title属性值

    A.$(".demo").css("title")

    B.$(".demo").css("title","value")

    C.$(".demo").attr("title")

    D.$(".demo").attr("title","value")


    $(".demo").each(function(index){this})