<textarea id="area"style="width:80%;height:60px">Selectinginthistext updates values below.</textarea> From – To area.onselect=function() {from.value =area.selectionStart; to.value=area.selectionEnd; }; 请注意: onselect是在某项被选择时触发,而在选择被删除时不触发。 根据规范,表单控件内...
for...of 语句遍历可迭代对象定义要迭代的数据。 Object.prototype.objCustom = function() {} Array.prototype.arrCustom = function() {} let iterable = [3, 5, 7] iterable.foo = 'hello' for (let i in iterable){ console.log(i) // logs 0, 1, 2, "foo", "arrCustom", "objCustom" i...
AI代码解释 >>>range(5)range(0,5)>>>foriinrange(5):...print(i)...01234>>>list(range(5))[0,1,2,3,4]>>>list(range(0))[]>>> 有两个参数或三个参数的情况(第二种构造方法): 代码语言:javascript 代码运行次数:0 运行 AI代码解释 >>>list(range(0,30,5))[0,5,10,15,20,25]>...
This is done intentionally, to match the behaviour of JavaScript methods like slice(opens in new tab). Explanation Iterating from a start value to an end value, with a given step, is exactly the problem that for loops were designed to solve. Our range function is really just a thin ...
JavaScript Code:// Function to get integers in the range (x, y) using recursion. function getRangeIntegers(x, y, result = []) { // Base case: if x is equal to or greater than y, return the result. if (x >= y - 1) { return result; } else { // Recursive case: increment ...
map(function, iterable, ...) 代码语言:javascript 代码运行次数:0 运行 AI代码解释 defdouble(n):return2*n num=[1,2,3,4,5,6,7,8]mp=map(double,num)#mp 是map型对象print(mp)# 输出mp对象的地址: 可以用list将mp对象转换成列表形式: 代码...
这一句btn1.onmouseup = function(){clearTimeout(id1);clearTimeout(id)};很关键,没了它,在onclick触发之前,会先触发onmosedown,在500ms后,开始执行,之后一直执行外层的计时器; 其它的都不是难点; 这个实例其实扩展到其它很多应用,比如可以把中间的显示部分替换为文章、图片等等,再把按钮换成自定义的,效果将...
isCustomDate: (function) A function that is passed each date in the two calendars before they are displayed, and may return a string or array of CSS class names to apply to that date's calendar cell. autoUpdateInput: (true/false) Indicates whether the date range picker should automatically...
FunctionWizard Group 插入 InsertIndent Justify ListNames Merge NavigateArrow NoteText Parse PasteSpecial PrintOut PrintPreview RemoveDuplicates RemoveSubtotal Replace RowDifferences Run Select SetCellDataTypeFromCell SetPhonetic Show ShowCard ShowDependents ...
2 获取指定文本框中的选中的文字：只响应第一个文本框Js代码 functiontest() { varo=document.getElementByIdx_x("inp1") varr=document.selection.createRange(); if(o.createTextRange().inRange(r)) alert(r.text); } 3 页面文本倒序查找Js代码abababababababa varrng=document.body.createTextRange()...