您还可以使用循环遍历数组元素for-in,如下所示: 例子 代码语言:javascript 复制 varfruits=["Apple","Banana","Mango","Orange","Papaya"];// Loop through all the elements in the arrayfor(variinfruits){document.write(fruits[i]+"");} 注意:for-in循环不应用于迭代索引顺序很重要的数组。该for-in循...
form; var opt, sel = form.ddVehicles; if (value == '') { restoreOptions(); } else { // Loop backwards through options as removing them modifies the next // to be visited if go forwards for (var i=sel.options.length-1; i>=0; i--) { opt = sel.options[i]; if (opt.text....
{ parse: { // parse options }, compress: { // compress options }, mangle: { // mangle options properties: { // mangle property options } }, format: { // format options (can also use `output` for backwards compatibility) }, sourceMap: { // source map options }, ecma: 5, // ...
十四、Quoting Strings with Single Quotes 、Backquote用单引号、反引号引用字符串 不用转义符,用‘’,可显示“”。用``,可显示‘’ ① var myStr ='“I am a "double quoted" string”' console后的结果: “I am a "double quoted" string” ② var myStr = `'“I am a "double quoted" string...
While we strongly encourage to use async iteration, we also expose a streaming interface for backwards compatibility. const options = { sharedStrings: 'emit', hyperlinks: 'emit', worksheets: 'emit', }; const workbookReader = new ExcelJS.stream.xlsx.WorkbookReader('./file.xlsx', options); wor...
对象继承的内置方法是不可枚举的,但你的代码添加到对象的属性默认是可枚举的。例如: leto = {x:1,y:2,z:3};// Three enumerable own propertieso.propertyIsEnumerable("toString")// => false: not enumerablefor(letpino) {// Loop through the properties...
046 Iteration_ The for Loop 11:12 047 Looping Arrays, Breaking and Continuing 22:03 048 Looping Backwards and Loops in Loops 11:54 049 The while Loop 11:54 050 Coding Challenge #4 15:36 051 Pathways and Section Roadmaps 04:09 053 Section Intro 00:40 055 Setting up Prettier and VS Co...
// 动画将遵循 `forwards` 和 `backwards` 的规则,从而在两个方向上扩展动画属性 animation-fill-mode: both; } Foranimation-fill-mode, I saw 4 good interpretation diagrams in a question and answer on Segment Fault (SF - How to understand animation-fill-mode), here are borrowed: ...
{ parse: { // parse options }, compress: { // compress options }, mangle: { // mangle options properties: { // mangle property options } }, format: { // format options (can also use `output` for backwards compatibility) }, sourceMap: { // source map options }, ecma: 5, // ...
{ parse: { // parse options }, compress: { // compress options }, mangle: { // mangle options properties: { // mangle property options } }, format: { // format options (can also use `output` for backwards compatibility) }, sourceMap: { // source map options }, ecma: 5, // ...