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                ??一站式輕松地調用各大LLM模型接口,支持GPT4、智譜、豆包、星火、月之暗面及文生圖、文生視頻 廣告
                ### 定義變量 ~~~ var a = 10; var b = "hello world"; var c = true; ~~~ int a =10; 上面三個定義的類型分別是:Number;string;boolean ### 調用函數 ~~~ function go(){ console.log("hello suho")} go() ~~~ ![](https://box.kancloud.cn/8760312abbefe020d1b99c2c8da85ecd_239x104.png) 沒有調用,就沒有執行 ~~~ var arr = [1,2,3] ~~~ 定義數組 ~~~ console.log(arr.length) ~~~ ![](https://box.kancloud.cn/d07aec21d44171b9b2babb8fbd6ebe36_263x70.png) 獲取數組長度 ~~~ console.log(arr[0]) ~~~ ![](https://box.kancloud.cn/0b4a3171e9d95ccfcf91f81d0307959c_275x68.png) 讀取某一個值 ~~~ for(var i=0;i<arr.length;i++){ console.log(arr[i]) } ~~~ ![](https://box.kancloud.cn/ace89d07a104ca5387ed2acb9eaa405d_248x139.png) 輸出每一項 for(初始值;循環條件停止條件;數值增減方式) {循環的操作} ~~~ if(b>a){ console.log("b大于a") }else{ console.log('b小于a') } ~~~ 真執行if,假執行else ~~~ while(b>a){ console.log("b大于a") } ~~~ 先判斷后執行 ~~~ do{ console.log("b大于a") }while(b>a) ~~~ 先循環再判斷,直到判斷條件為假。 * * * ~~~ var zhang = { name:"zhangkexin", age:20, sex:"女" } ~~~ 定義對象 ~~~ console.log(zhang.age) ~~~ 獲取對象的屬性
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