如何在jQuery中遍历数组？

jQuery.each（） jQuery.each（）

jQuery.each(array, callback) 数组迭代

jQuery.each(array, function(Integer index, Object value){}); 对象迭代

jQuery.each(object, function(string propertyName, object propertyValue){}); 例如：

var substr = [1, 2, 3, 4]; $.each(substr , function(index, val) { console.log(index, val) });

var myObj = { firstName: "skyfoot"}; $.each(myObj, function(propName, propVal) { console.log(propName, propVal); });

for (initialExpression; condition; incrementExpression) statement 例

var substr = [1, 2, 3, 4];

//loop from 0 index to max index for(var i = 0; i < substr.length; i++) { console.log("loop", substr[i]) }

//reverse loop for(var i = substr.length-1; i >= 0; i--) { console.log("reverse", substr[i]) }

//step loop for(var i = 0; i < substr.length; i+=2) { console.log("step", substr[i]) } 运行代码段展开摘要 对于

//dont really wnt to use this on arrays, use it on objects for(var i in substr) { console.log(substr[i]) //note i returns index } 的

for(var i of subs) { //can use break; console.log(i); //note i returns value } 每次

substr.forEach(function(v, i, a){ //cannot use break; console.log(v, i, a); }) 问题来源于stack overflow