scrollTop; if(oTop > 0){ scrollTo(0,oTop-50); timer = requestAnimationFrame(fn); }else{ cancelAnimationFrame(timer); } }); } </script> 3、增加scrollBy()动画效果 将scrollBy(x,y)中的y参数设置为-50,直到scrollTop为0,则回滚停止 代
1varsum=0,sumRow=0;2for(vari=1;i<=5;i++){3sumRow=0;45if(i!=1) document.write("(");67for(varj=1;j<=i;j++) {8if(j!=i) document.write(j+"+");9elsedocument.write(j);10sumRow +=j;11}12if(i==1) document.write("+");13elseif(i==5) document.write(")=");14else...
If the prototype // property is set to a value that is not a JSObject, the prototype // property will not be used to create instances of the function. // See ECMA-262, 13.2.2. inline void set_non_instance_prototype(bool value); inline bool has_non_instance_prototype(); // Tells ...
if (index >= static_cast<uint32_t>(Smi::kMaxValue)) return false; if (object.IsJSArray()) { Object length = JSArray::cast(object).length(); if (!length.IsSmi()) return false; *new_capacity = static_cast<uint32_t>(Smi::ToInt(length)); } else if (object.IsJSArgumentsObject...
if_return (default: true)— optimizations for if/return and if/continue imports (default: true)— drop unreferenced import symbols when used with unused inline (default: true)— inline calls to function with simple/return statement: false— same as 0 0— disabled inlining 1— inline simple ...
//方格点击事件 _i:坐标i _j:坐标j e:鼠标事件functionblock_click(_i, _j, e) {//跳过已打开的方格if(grid[_i][_j].isOpen) {return; }//鼠标左键打开方格if(e.button === 0) { }//鼠标右键标记方格elseif(e.button === 2) { ...
if (frame) console.warn(frame); } else { console.warn(message); } }};onwarn类型: (warning: RollupLog, defaultHandler: (warning: string | RollupLog) => void) => void;一个函数,用于拦截警告信息。它与 onLog 非常相似,但只接收警告。如果调用默认处理程序,日志将被处理为警告。如果提供了...
if (lp2 === lp1) { lp2 = local2; local1 = constArray.pop(); } else if (lp2 && local1.replace(/[QHMuLSPVlrtZMLzQ=]/g, "") === lp2) { constArray.push(local2); } } 刚才还分析了lp1 === lp2 + 1,所以while (--lp1)第一次执行的时候,lp1和lp2就相等了,进入if (lp2 ...
简介:v-if, v-show 观念或使用。 https://youtu.be/5nG0k1VN7ro https://pan.baidu.com/s/1kVNbzZT 1.v-if 2.template 3.v-show 4.v-else 5.v-if many 简介:遍历 model https://youtu.be/mKWnus9_EpU https://pan.baidu.com/s/1skBdGdv ...
In a single-threaded environment, it really doesn’t matter that the items in the thread queue are low-level operations, because nothing can interrupt the thread. But if you have a parallel system, where two different threads are operating in the same program, you could very likely have unpr...