Question

<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>

所以我遇到的问题是这个代码适用于个人笔记本电脑上的Internet Explorer，但不适用于Chrome。在我的uni计算机上，代码在chrome或Internet Explorer上根本不起作用。我试图通过代码寻找错位的括号，但还没有找到问题。这种情况以前发生过，问题是一个错位或缺失的括号。如果有人可以通过这个代码告诉我什么是错的或丢失了？

Answer 1

这本身并不是答案，但这里有一些建议的改进，它们限制了重复的代码位数，并且没有任何全局变量。< / p>

/* This only operates on the element with id="entertext". 
 * You could easily rewrite the function to pass in an element to 
 * operate on.  If no 3rd parameter is passed, it won't do anything if the
 * style is not equal to the first.
 */
function toggleStyle(property,ifTrueValue,ifFalseValue){
    var el = document.getElementById('entertext');
    if( el.style[property] !== ifTrueValue )
        el.style[property] = ifTrueValue;
    else if (typeof ifFalseValue !== 'undefined')
        el.style[property] = ifFalseValue;
    }
}

function toggleBold(){
    toggleStyle('fontWeight',700,200);
}

function toggleitalic(){
    toggleStyle('fontStyle','italic','normal');
}

function toggleline() {
    toggleStyle('textDecoration','underline','none');
}

function togglered() {
    toggleStyle('color','red','black');
}

function toggleblue() {
    toggleStyle('color','blue','black');
}

function togglegreen() {
    toggleStyle('color','green','black');
}

function togglefontA(){
    toggleStyle('fontFamily',"Impact,Charcoal,sans-serif")
}


function togglebfontB(){
    toggleStyle('fontFamily',"Times New Roman, Times, serif");
}

function togglefontC(){
    toggleStyle('fontFamily',"Agency FB, verdana, helvetica, sans-serif";
}

function togglefontD(){
    toggleStyle('fontFamily',"Arial, Helvetica, sans-serif");
}


function rgb(){
    var rgb = getRGB()
        color;

    if( rgb == false)
        color = 'white';
    else
        color = "rgb("+rgb.red+","+rgb.green+","+rgb.blue+")";
    toggleStyle('backgroundColor', color );
}


function getRGB(){
    var red= document.getElementById("red").value;
    var green= document.getElementById("green").value;
    var blue= document.getElementById("blue").value;
    if( red <= 255 && red >= 0 && green <= 255 && green >= 0 && blue <= 255 && blue >= 0 ) {
        return {
            'red': red,
            'green': green,
            'blue': blue
        }
    } else 
        return false;
}

我有这个代码，但我不知道为什么它不会工作有人能告诉我？

1 个答案: