javascript - 打破 JavaScript 循环

Question

我有以下代码来使用 Google 图片搜索 API:

google.load('search', '1');   
    function searchComplete(searcher) {
      // Check that we got results
      if (searcher.results && searcher.results.length > 0) {
        // Grab our content div, clear it.
        var contentDiv = document.getElementById('contentimg');
        contentDiv.innerHTML = '';

        // Loop through our results, printing them to the page.
        var results = searcher.results;
        for (var i = 1; i < results.length; i++) {
          // For each result write it's title and image to the screen
          var result = results[i];
          var imgContainer = document.createElement('div');



          var newImg = document.createElement('img');
          // There is also a result.url property which has the escaped version
          newImg.src = result.tbUrl;


          imgContainer.appendChild(newImg);

          // Put our title + image in the content
          contentDiv.appendChild(imgContainer);

问题是，它给了我 3 个图像结果。如何打破循环并仅显示第一个图像而不是 3 个图像？如果我改变for (var i = 1; i < results.length; i++)至for (var i = 3; i < results.length; i++)它只显示一张图像，但显示的图像是第三张图像，我需要显示第一张图像:)请指教

Answer 1

根本不要使用 for 循环。只需将 i 的所有实例替换为 0。

google.load('search', '1');   
    function searchComplete(searcher) {
      // Check that we got results
      if (searcher.results && searcher.results.length > 0) {
        // Grab our content div, clear it.
        var contentDiv = document.getElementById('contentimg');
        contentDiv.innerHTML = '';

        var result = searcher.results[0];

        var imgContainer = document.createElement('div');

        var newImg = document.createElement('img');
        // There is also a result.url property which has the escaped version
        newImg.src = result.tbUrl;

        imgContainer.appendChild(newImg);

        // Put our title + image in the content
        contentDiv.appendChild(imgContainer);

0 表示返回的第一项(编程中几乎所有数字序列都从 0 开始!)，因此所有其他结果将被忽略。