我想知道我是如何使用其他功能来禁用某个功能的。我有一个表格要求额外的课程作业,但如果用户没有完成任何额外的工作,则隐藏输入。如果他们删除了一组输入并改变了主意,我想加入一个故障保险。
我需要帮助的是编写故障保护功能,检查:如果功能1发生,请将其禁用。
CodePen:http://codepen.io/theodore_steiner/pen/ORzpQQ
Retry-After

function hideCourseWork() {
var otherEducationHistory = document.getElementById("otherEducationHistory");
otherEducationHistory.style.display = "none";
if (otherEducationHistory.style.display == "none") {
var noAdditionalCourseWork = document.getElementById("noAdditionalCourseWork");
var checkNo = document.getElementById("checkNo");
var undo = document.getElementById("undoNoAdditionalCourseWork");
noAdditionalCourseWork.style.top = "-48px";
checkNo.style.top = "-65px";
undo.style.top = "-65px";
undo.style.top = "-63px";
}
};

答案 0 :(得分:1)
你对自己的问题并不是很清楚,但也许这会有所帮助。
函数与变量是一回事。它们可以被重新分配(例如,对于空函数)..
function doSomething(){
alert("didSomething");
}
function disableDoSomething(){
window.doSomething = function(){};
}
如果您希望以后能够重新启用该功能,您可以执行以下操作......
function doSomething(){
alert("didSomething");
}
var functionHolder;
function disableDoSomething(){
if(!functionHolder) functionHolder = window.doSomething;
window.doSomething = function(){};
}
function enableDoSomething(){
window.doSomething = functionHolder;
}
答案 1 :(得分:1)
{c.name: c.foreign_keys for c in table.columns if len(c.foreign_keys) > 0}
为了后人(ES5):
var foo = () => { /* foo definition */ },
bar = foo;
/* re-assign foo to a new, empty, function implementation;
effectively "disabling" it */
foo = () => {};
/* ... code that uses function reference foo ...*/
/* re-enable foo's original behavior by assigning bar to foo */
foo = bar;